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GMC suggests that owning the 2018 Sierra 1500 makes you a pro, and we couldn’t agree more. You will quickly become a professional of visiting the repair shop as you navigate your way through all the troubles that come with this full-size pickup truck. Some of the major complaints about the 2018 GMC Sierra 1500 include powertrain issues, steering failures and problems with the service brakes. Whether you struggle to get the truck to go, steer properly or stop, you shouldn’t experience these troubles when you get behind the wheel, but many people do.
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NHTSA Complaints for the 2018 GMC Sierra 1500
| Complaint Category | Number of Complaints |
|---|---|
| Power Train | |
| Service Brakes | |
| Electrical System | |
| Steering | |
| Engine | |
| Unknown Or Other | |
| Fuel/propulsion System | |
| Wheels | |
| Structure:body | |
| Air Bags |
Problems with the Transmission
Aside from the engine, it’s vital that your powertrain is operating correctly for you to get down the road. When the components of a powertrain begin to fail, drivers can experience sounds, rough shifting and an unpleasant ride. Owners of the 2018 GMC Sierra 1500 find that the powertrain gives continuous problems.
One consumer wrote on Edmunds, “Purchased 2018 GMC Sierra all terrain in July 2018 due to overall styling, handling and I once had complete faith in GM. Approx. A month after purchase the transmission started the hard shifts and I took it in for service and all was well for a couple more months. Had my 10000-mile service completed in December and had the transmission reprogrammed and fluids flushed. All seemed to be functioning satisfactorily. 1/15/2019 I was backing out of a driveway and I lost all gauges, power steering, heated seats, transmission and about every other vital system all while blocking both Lanes of traffic.”
This is a scary situation that no one wants to be in. Unfortunately, it’s not the only complaint like this regarding the GMC truck. The automaker understands that numerous things are going on with this powertrain and even issued Service Bulletin #PIE0405 to address one powertrain concern. This bulletin discusses the torque converter shudder and how it causes the vehicle to shake while driving. There isn’t a fix listed for the problem, but simply an acknowledgment that it does exist.
While it brings some comfort that GMC agrees the problem exists, it would be better if they constructed transmissions without problems. No one wants to shake, rattle and roll down the highway.
Here are some actual complaints logged with the NHTSA about the 2018 GMC Sierra 1500 Transmission Problems
BRAND NEW 2018 SIERRA 1500 Z71. WHEN DRIVING THE TRUCK FOR THE FIRST TIME AFTER SITTING FOR A NUMBER OF HOURS (6+HRS) THE TRUCK EXPERIENCES A “HARD” 1-2 SHIFT. THIS OCCURS 100% OF THE TIME WHEN I LEAVE FOR WORK IN THE MORNING. SOMETIMES IT FEELS LIKE THE TRANSMISSION SLIPPED, THIS IS THE HARD SHIFT FEELING. OTHER TIMES THE TRUCK LOSES ACCELERATION, CUTS OUT, FEELS LIKE THE TRUCK HAS RAN OUT OF FUEL. ONLY HAPPENS WHEN THE TRUCK HAS BEEN SITTING FOR A LONG PERIOD.
EXTREMELY HARD SHIFTING ON LOWER GEARS. WHEN SLOWING WHEN IT GOES FROM 2ND TO 1ST IT FEELS LIKE I GOT REAR-ENDED. NOT ALL THE TIME BUT ONCE A DAY AT LEAST. IT ALSO SHUDDERS WHEN SLOWLY ACCELERATING IN TRAFFIC, SOMETIMES THE RPM GOES WAY HIGH AND IT LURCHES FORWARD WHEN IT UPSHIFTS.
AFTER TRUCK HAS SET FOR A WHILE AND START TO TAKE OFF FROM A STAND STILL AND IT GOES TO SHIFT FROM 1ST TO 2ND IT WILL HARD SHIFT AND TRUCK WILL SOMETIMES LURCH FORWARD. WHEN ACCELERATING SLOWLY TRUCK WITH SHUTTER WHEN SHIFTING GEARS, ALMOST LIKE IT CAN’T DECIDE TO SHIFT TO THE NEXT GEAR. ONCE TRUCK IS WARMED UP THIS NO LONGER HAPPENS.
DAILY THE TRANSMISSION HAS A HARD SHIFT FROM 1ST TO 2ND GEAR. POTENTIALLY CAUSING ME TO LOOSE CONTROL OF THE VEHICLE. IVE HAD IT IN THE GMC SHOP 3 TIMES AND GMC IS UNABLE TO FIX THE PROBLEM. AFTER THE VEHICLE SITS FOR PERIODS OF 4 HRS OR MORE THE PROBLEM REOCCURS. THIS IS A SERIOUS POLITICAL SAFTEY HAZARD IN THE 8SPEED TRANSMISSION AND NEEDS TO BE RECALLED AND FIXED WITH A NEW TRANSMISSION.
Problems with the Steering
Every driver relies on the steering system to maneuver their vehicle. With the 2018 GMC Sierra 1500, the steering can quickly become a problem. Drivers face trouble with steering and sometimes even lose the ability to steer at all.
Read what this one driver said on the NHTSA website. “When driving the vehicle, it steers very hard like a lack of power steering than all of a sudden it feels like the power steering kicks in causing an oversteering situation. Feels like you have no control. Have talked to other owners who have the same issue. Pickup has 40 miles on it. It happens every time I drive it.”
During GMC’s Safety Field Investigations, a document was circulated to dealers looking for more information regarding the steering issues. The complaint stems back to the Power Steering Assist. The only guidance that the automaker offers is to replace the electric belt drive rack and pinion steering gear. Our thought is that if you desire to drive a car without power steering, there’s no sense investing in a newer truck; choose something from the 1960s instead.
Here are some actual complaints logged with the NHTSA about the 2018 GMC Sierra 1500 Power Steering Problems
STEERING PULLS TO LEFT WHEN DRIVING AT ANY SPEED, AND TERRAIN. PULLS ENOUGH TO TURN YOU INTO ONCOMING TRAFFIC IF YOU DO NOT CORRECT. TOOK TO DEALERSHIP AND WAS TOLD NOTHING WAS WRONG WITH THE TRUCK. STEERING PROBLEM CONTINUES AND IS DEFINITELY A SAFETY ISSUE
WHEN IN TRAFFIC AT ANY SPEED THE STEERING WHEEL WILL ACTUALLY TURN TO THE LEFT. IT TAKES YOU BUY SURPRISE AND IT’S A STRANGE FEELING. I WAS TOLD BY THE DEALER THEIR IS NO ISSUES. VERY SCARY! IT HAPPENS AT ANYTIME AND WITHOUT WARNING.
I WAS DRIVING 70 MPH DOWN HIGHWAY 75 IN MCKINNEY TX, WHEN MY STEERING COMPLETELY LOCKED UP. LUCKILY I MANAGED TO GET TRUCK STOPPED AND TOWED BACK TO DEALER. THIS COULD EASILY HAVE BEEN A FATALITY ACCIDENT.
Problems with the Brakes
Just as important as going is the ability to stop. When you push the brakes on your vehicle, you expect to stop quickly. That’s the trouble with the 2018 GMC Sierra 1500; it just doesn’t seem to want to stop.
One complaint written on the NHTSA states, “Driving slowly in bumper to bumper traffic. I was stopped with my foot on the brakes, and the truck started moving forward. I thought engine surge, but it was not. I pumped brakes hard and the truck stopped. This has happened 2 times.”
If this was only one complaint, we might not be so alarmed, but that’s not the case. Other drivers have taken to the internet to complain about the exact same situation. Service Bulletin #PIT5361D comes directly from the manufacturer and addresses the concern. It’s focused on figuring out why it takes more effort to depress the brake pedal and get results. Some techs might find fluid in the brake booster vacuum line or the booster itself. To fix this, the technician needs to replace the vacuum pump, master cylinder, brake booster, vacuum pump belt and the vacuum line between the pump and booster.
To review, when you drive a 2018 GMC Sierra 1500, you might experience strange noises and movements. You may also struggle to steer the truck or stop it. This sounds more like a crazy amusement ride versus a reliable, dependable truck to us. Why not just head to the local county fair if you need some thrills?
Here are some actual complaints logged with the NHTSA about the 2018 GMC Sierra 1500 Brake Problems
MY 2018 GMC SIERRA SLT’S BREAK PEDAL BECOMES EXTREMELY DIFFICULT TO PRESS, AND I CAN HEAR SOMETHING THAT SOUNDS LIKE AIR COMING FROM THE PEDAL. THIS HAPPENS ESPECIALLY AT LOWER SPEEDS.THIS CAUSED ME TO CRASH INTO A CONCRETE WALL AND DAMAGE MY TRUCK. MY TRUCK HAS ONLY 10,000 MILES.
I WAS IN THE BANK ATM DRIVE THROUGH AND THE GUY AHEAD OF ME STARTED TO GO, I BARELY PUSHED THE GAS PEDAL AND HE DECIDED TO STOP. I HIT MY BRAKES AND THE TRUCK WAS HARD TO STOP, ALMOST LIKE THE GAS PEDAL RESPONSE WAS STILL IN THE GO MODE BEFORE IT HAD THE CHANCE TO REACT TO MY INPUT OF TAKING MY FOOT OFF THE GAS TO APPLY THE BRAKES. I CAN DUPLICATE THIS BEHAVIOR ALL THE TIME.
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Complaint Data
| Category | Power Train |
| Date | Mar 21, 2023 |
| State | AR |
| Description | Transmission failure - the gm manufactured torque converter on my truck failed to cause the transmission to fail. The internet is rife with stories of the failure of these transmissions on 2018 and 2019 gmc and chevy trucks. |
| Category | Seat Belts |
| Date | Mar 10, 2023 |
| State | GA |
| Description | the middle rear seatbelt fails to lock when retracted, therefore I cannot use my grandchild's booster seat. The dealership has ordered a replacement, but cost nearly 0. I bought the vehicle new in december 2018, but have never had to use the real seatbelt until now. Therefore I did not know it did not work properly until now. |
| Category | Power Train |
| Date | Mar 02, 2023 |
| State | OH |
| Description | 8 speed transmission jerking, the torque convertor has been replaced 1 time already and having same issues as before. This time while in parking lot at store, was pulling into parking space, truck lundge forward during hard downshift hitting cart of person walking in front of truck. No damage and luckly barely hit the cart and not the person. I have also had the truck lunge forward when parking in my garage and hitting the garage wall in front. My truck is back at dealer again after hitting the cart in the parking lot. The 8 speed transmission issue from gm is a safety issue. My truck has already had first torque converter replaced and now having same issue with the new torque convertor |
| Category | Power Train |
| Date | Jan 23, 2023 |
| State | VA |
| Description | Noticed ongoing vibration sounds like you are running over rumble lines on road. |
| Category | Forward Collision Avoidance: Automatic Emergency Braking, Service Brakes |
| Date | Jan 19, 2023 |
| State | MT |
| Description | Braking vehicle will cause brake pedal to vibrate and become soft while pressing it and requires more effort to stop vehicle. Service brake assist light laminates on info system. I know there is a recall for this currently but my vehicle is not listed for this all though I have the same issues. Recall is n202300860. |
| Category | Electrical System |
| Date | Jan 18, 2023 |
| State | MI |
| Description | The main harness under the truck , front to back . There was a separation from the conduit, wires exposed and were arcing. Truck would not start . I have since had it fixed . I just feel truck is not that old , to soon for a problem like this . And it cost a lot of money. |
| Category | Steering |
| Date | Jan 03, 2023 |
| State | CA |
| Description | Hit a small bump driving 55mph on highway and had sudden complete power steering loss and extremely hard to turn. Drove to a safe location and shut down truck for 1 hour. Upon restart power steering was operating normal. Proceeded back on the freeway and as soon as I hit a small bump with driver's side front tire the same thing happened again complete power steering loss. Drove to dealership and waiting for explanation. The truck is not safe due to inability to turn the wheel without power steering. For someone with less strength, this could be deadly on anything besides a straight road, needing to turn a corner, or to avoid a collision. |
| Category | Electrical System, Service Brakes |
| Date | Dec 29, 2022 |
| State | OR |
| Description | I purchased my 2018 gmc sierra 1500 pickup truck new in 2018. To date it only has 28k miles on it. I have never used the trailer breaking system that it came equipped with. On 12/24/22 we were traveling to a family function for christmas. The "service trailer break system" warning message came on and the chime chimed continuously until I got to my destination, about an hour away. This chime was very distracting and there was no way to turn it off. After arriving at my destination I turned the truck off hoping it was just a fluke. When I started the truck back up the "service trailer break system" warning light and chime continued. It continued for an hour on my way home. Again, this was very distracting and I was unable to focus 100% of my attention on the road and my driving. Thank fully I made it home okay. On 12/27/22 I took the truck to my mechanic to have him take a look. He said he has heard of this issue with these pickups. His diagnostic confirmed that the trailer breaking switch (on the dash) was functioning properly but said that the chassis control module was likely the culprit. He replaced the control module and it had to be programed by a factory technician. After this part was replaced the warning light or chime does not come on anymore. I have the defective part for inspection and the bill totaling 91. 86 for the repair upon request. |
| Category | Power Train |
| Date | Dec 16, 2022 |
| State | NV |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated while driving 50 mph, the vehicle started shaking and vibrating abnormally. There was no warning light illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the transmission oil needed to be flushed. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 71,000. |
| Category | Service Brakes |
| Date | Dec 16, 2022 |
| State | WI |
| Description | I purchased this 2018 gmc pickup in may 2021. Starting in nov 2022 I started getting a sporadic service trailer brake system warning light and chime. I have never towed a trailer using this trailer brake system on the vehicle, but the warnings come on sporadically. I have done some research and found this is not an isolated case as others have reported the same problem. Some owners have replaced the dashboard controller at their own expense, however this is now a well documented problem that goes beyond an isolated case. This is a defect of the trailer brake controller and should be recalled by gm at gm expense. It is a hazard to driving when the visual and audible chime come on sporadically. It's a distraction to safe driving and requires immediate intervention. I did advise my local dealer of the problem when the vehicle was serviced dec 2022, however they did not have a technician available to work the problem. So I continue receiving the visual and audible warning every time I drive the vehicle. Please highlight this problem within your organization for a possible safety recall. |
| Category | Unknown Or Other |
| Date | Dec 10, 2022 |
| State | CO |
| Description | Sunroof shattered while driving on the interstate |
| Category | Fuel/propulsion System |
| Date | Nov 26, 2022 |
| State | FL |
| Description | Gas leak. My 2018 gmc sierra 1500 has been giving me two codes for evap leak small and large and I notice a black spot on my drive way under the gas tank wich in fact was gas. I can see the gas tank is wet but it comes from the top part of the gas tank. I been looking for recalls on this but there isnt any for this specific year of gmc sierra 1500 slt. |
| Category | Power Train, Suspension, Tires |
| Date | Nov 22, 2022 |
| State | NH |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated that while driving at an undetermined speed, the vehicle was shaking while shifting gears. The contact stated while shifting from four cylinders to eight cylinders, the rear-end was shaking violently. The hood latch warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the tires needed to be replaced. The tires were replaced three times however, the failure persisted. The manufacturer was not contacted. The failure mileage was approximately 50,000. |
| Category | Service Brakes |
| Date | Oct 30, 2022 |
| State | TX |
| Description | Breaks are not working |
| Category | Steering |
| Date | Oct 28, 2022 |
| State | CO |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated that while pulling up to park the vehicle at approximately 2 mph, the power steering failed causing the contact to use an excessive an extra amount of effort while maneuvering the steering wheel to park the vehicle. The power steering assist warning light was illuminated. The contact took the vehicle to the dealer to be diagnosed. The contact was informed that the steering assembly and steering gear needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and filed a case. The approximate failure mileage was 39,000. |
| Category | Power Train |
| Date | Sep 27, 2022 |
| State | GA |
| Description | Experienced heavy vibration or shudder through transmission once fluid got to around 145 degrees. Also transmission has rough shift on the first shift of a drive cycle. When I started to research I found many of the same issues reported with 8 speed transmissions. I've also read about the issues with the lifters not working for the active fuel management system though I haven't experienced that yet. The replaced my transmission fluid at the dealership under the powertrain warranty. This issue showed up at around 35,000 miles, so I am very worried about the safety and reliability of this engine and transmission. |
| Category | Unknown Or Other |
| Date | Sep 16, 2022 |
| State | TX |
| Description | In short, the moonroof of my vehicle spontaneously exploded into a million pieces one morning while driving. |
| Category | Electrical System, Engine, Service Brakes |
| Date | Sep 14, 2022 |
| State | OR |
| Description | While driving 35 miles per hour in the early morning hours I came to a 4-way intersection and applied the brakes slowly. Suddenly, I lost all power in the brakes and the steering wheel locked up. The lights, and stereo remained on, and my dash board display immediately showed a red check engine light. I immediately turn on my hazard lights, turned the ignition key off and tried to restart the truck. There was no clicking sounds. The truck would not start but the lights dimmed and the dash display now showed an intermittent yellow, flickering check engine light. After roughly 30 minutes while waiting for aaa to arrive I tried the ignition key and the truck started up with a red check engine light. Rather than attempting to drive I had aaa tow my vehicle to the chevrolet dealership where I purchased the truck. |
| Category | Steering, Suspension |
| Date | Sep 12, 2022 |
| State | TX |
| Description | My truck has a severe vibration or shake extremely bad at 60mph and up. I have tried new tires, front end alignment, and several different shops have told me they don't know what it is drive shaft or axels |
| Category | Service Brakes, Unknown Or Other |
| Date | Sep 07, 2022 |
| State | CA |
| Description | Received an error on the dash saying "service brake assist". At the same time the brake pedal became very stiff and braking power was decreased significantly. I have received this same message and brake pedal stiffness with reduced braking power three times in the last 4 days. |
| Category | Unknown Or Other |
| Date | Sep 07, 2022 |
| State | OR |
| Description | Air conditioning condenser failed at about 48,000 miles. Seems to be a common problem that is a design defect. |
| Category | Power Train |
| Date | Sep 02, 2022 |
| State | IL |
| Description | Transmission system, hard shifts and shaking causing vehicle to down shift hard and throw itself forward almost causing an accident when coming to a stop, when vehicle was taken into service they did not diagnose the vehicle for this problem, while driving vehicle shifted down so hard causing vehicle to be stuck in only 1st gear and would not shift out of 1st gear |
| Category | Service Brakes |
| Date | Aug 28, 2022 |
| State | AL |
| Description | The service alert for the trailer brakes keeps going off constantly and continues to go off persistently almost making the vehicle undriveable. I was informed to file a complaint with your company by my local dealership as this is a recurring issue with gmc trucks. |
| Category | Service Brakes |
| Date | Aug 15, 2022 |
| State | PA |
| Description | *a message and alarm kept going off on our truck "service trailer brake". We are not towing a trailer, nor had we had a trailer hooked to this vehicle since 2019. It began only going off occasionally, but within a few weeks it was going off constantly. It would show repeatedly on the dash and the alarm would sound over and over. Trying to turn off the system was not successful, no matter how many times we hit dismiss. It was totally distracting and worrisome that something was wrong with our braking system in general. *the constant alarm and dash display made driving a very distracted experience. It is so loud that you cannot hear other outside noises. We were also concerned about the safety of our regular braking system. *I called the dealer where our truck is regularly serviced. They immediately said "is it the trailer assist alarm?," so it was obvious that this is happening to other owners regularly. It took several days to get in for an appointment. The shop mgr helped us to locate and pull the alarm fuse to stop the noise, so we could drive it to the dealership later in the week. The display was still going off when I pulled the truck into the dealership, as it has done all the way there (17miles from my home). *it was inspected by the gm dealership (schwarz, inc. Honesdale, pa) and the defective switch was replaced at a cost to us of 7. 14 on 08/11/2022. *this issue started several months ago (feb 2022?), but it was a one time thing. So, we thought it was just a fluke. Then, a month or so ago it started again, but was happening only once or twice and would then disappear for days. Then, 2 weeks ago it began to happen continuously. |
| Category | Service Brakes |
| Date | Aug 15, 2022 |
| State | LA |
| Description | I am getting a service alert for the trailer brake system. It is constant and loud and distracting and a significant safety hazard, not only because of the distraction, but also because it renders trailer brakes completely useless |
| Category | Engine, Fuel/propulsion System, Vehicle Speed Control |
| Date | Aug 03, 2022 |
| State | LA |
| Description | The speed of the truck will not increase. The rpms goes really high and the truck will not move into the next gear. The rear end of truck vibrates. I took this to the dealer and was told it is the transmission fluid is faulty. The check engine light does come on. I did not have the new transmission fluid changed because dealer said is cost 0 for the fluid and 0 for the labor and 8 for the diagnostics. So I still have the same problem. Also told you can not purchase this transmission fluid no where but gmc. |
| Category | Unknown Or Other |
| Date | Jul 18, 2022 |
| State | AR |
| Description | Constantly getting “service trailer brakes system “ |
| Category | Electrical System, Forward Collision Avoidance: Warnings, Wheels |
| Date | Jul 07, 2022 |
| State | CA |
| Description | The light in the dashboard gose dark and it gives me a warning collision alert and the tiers they spin out of control when turning or when I I'm driving I think it's the tiers they have a lot of tread still… |
| Category | Electrical System: Instrument Cluster/panel, Equipment:electrical:infotainment |
| Date | Jun 20, 2022 |
| State | VA |
| Description | Informant system and instrument clust/panel starts to change with nothing be clicked. Starts to phantom change everything which is deters from paying attention to actual driving becoming a safety hazard. Dealership has tried to update the software and still does not work. |
| Category | Power Train |
| Date | Jun 15, 2022 |
| State | PA |
| Description | Transmission slams into gear in drive and reverse while driving it will slam into gear. And occasionally at speeds under 5 going up a hill it will have no power and struggle. I have 59000 miles on it last year around 53000 miles they did a transmission flush and that fixed it for about 9 months. Just took it back in they reprogrammed the transmission and it no longer slams in drive and reverse but still knocks back-and-forth while driving. |
| Category | Electrical System, Power Train, Service Brakes |
| Date | Jun 12, 2022 |
| State | TX |
| Description | I was stopped at a fast food drive thru and then I tried to go to the next window and the truck wouldn't move at all it will just rev so I put it in parked turned off the truck and turn it back on put it on drive and was able to move for like 40 ft then it did it again so I had it towed to my home |
| Category | Electrical System, Service Brakes |
| Date | Jun 07, 2022 |
| State | MN |
| Description | Trailer brake modulator on 2018 gmc sierra does not consistently signal trail brakes to work when needed on our 7,500 pound rv trailer. Gmc dealer eventually found that the battery cables were undersized as installed with the factory towing package on the 2018 gmc sierra. The undersized battery cables do not consistently deliver adequate voltage to the trailer brake modulator on the gmc sierra, so inconsistent electric brake function for our 7,500 pound rv trailer. Dealer had difficulty diagnosing the problem as being the wrong factory-installed battery cables to go with the factory-installed trailer towing package. So it cost us |
| Category | Power Train |
| Date | Jun 04, 2022 |
| State | IN |
| Description | I have a 2018 gmc sierra denali. I started having problems with the 8-speed transmission at 18,000 miles. The vehicle has been to the dealership for a transmission fluid flush, a transmission relearn, a 5-week valve body replacement, two more trips to the dealership where the truck did not malfunction for them. I have had issues with an air leak on the driver side front door as well. That issue has not been resolved as well. I spent over ,000 for the truck and have had nothing but problems. I have brought it to general motors attention and all I would do is get a run around and no results. I was told that there is nothing more that they can do. I am beside myself and just sick as I do not know what to do. I bought a brand new vehicle in order to not have problems compared to a used one. |
| Category | Electrical System, Service Brakes |
| Date | Jun 01, 2022 |
| State | MO |
| Description | Service trailer brake system - warning |
| Category | Unknown Or Other |
| Date | May 26, 2022 |
| State | TX |
| Description | The radiator developed a leak on the drivers side. This caused a loss in antifreeze. |
| Category | Engine, Power Train |
| Date | May 18, 2022 |
| State | CO |
| Description | Leak detected in the engine oil cooling lines, requiring replacement. |
| Category | Engine, Fuel/propulsion System, Power Train |
| Date | May 17, 2022 |
| State | WV |
| Description | I was driving down the highway when my vehicle loss control of operation and check engine light came on. After taking it to the gmc dealership it was determined to be a bad lifter in the motor. The garage had to take the motor completely apart to repair a bent rod and cylinder in the motor. There are numerous reports and a pending class action lawsuit concerning this device in the gmc sierra trucks and other gmc vehicles. The lifters in the cylinder of this motor are designed to switch the engine from v4 to v6 to save on gasoline. My vehicle has been repaired by the gmc garage but I've seen reports of this problem repeatedly happening in these vehicles and it causes me great concern because if there is a lot of traffic in the area I could get hit or cause an accident by not being able to operate the truck. My vehicle is available for inspection upon request. The safety of myself and others is put at risk because the sudden equipment breakdown could cause an accident. The problem was confirmed by the dealer. No other parties have inspected the vehicle. No warning lamps went off prior to this happening and the vehicle is only a 2018 and only has 36,000 miles on it. |
| Category | Exterior Lighting |
| Date | May 09, 2022 |
| State | MI |
| Description | The left rear tail light assembly is subject to direct wheel spray resulting in premature corrosion and failure of the lightbulb and wiring harness. Failure first occurred within 18 months of ownership. I cleaned the contacts and packed the connection with dielectric grease. However after three years the bulb connection is now totally corroded and the circuit has failed requiring harness replacement. The problem is so widespread, replacement wiring harnesses for the left rear tail light assembly are out of stock and unavailable from gm parts. I am now using the vehicle without operating right rear turn signals. Gm-trucks. Com is an owners chat room with many entries about this problem. [xxx], bsme, p. E. Sae information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6). |
| Category | Steering |
| Date | Apr 07, 2022 |
| State | MS |
| Description | On 2/26/22, approximately 24,000 miles on the vehicle, while traveling on the interstate a warning popped up in the display that the power steering had failed and to operate the vehicle with caution. Immediately I noticed I had no power steering, and the vehicle was extremely hard to steer. I exited the interstate and turned the vehicle off. I conducted a visual inspection; no issues were immediately apparent. After several minutes I started the vehicle, and the power steering began functioning. I conducted an internet search and learned this is a common issue for gmc trucks, previously resulting in numerous crashes and over one million vehicles being recalled. Nhtsa campaign number: 18v586, gm's number for the recall 18289. 3/1/22, I contacted gm customer care and was advised my vehicle was not part of the recall. I was advised to take the vehicle to a gm service center, at my cost. 3/1/22, I contacted mossy gmc of picayune, ms, and spoke with a technician, who advised the issue is usually due to a drop in voltage and advised me to replace the battery. 3/19/22, replaced the battery. 3/30/22, upon startup the power steering again failed. I turned the vehicle on and off several times, and the power steering began functioning. 3/30/22, went to mossy of picayune, spoke with a technician, who advised he was quite familiar with the issue, stating this is a common problem with gmc trucks, he advised to replace the battery. Told him I replaced the battery on 3/19/22, he stated I would likely need to have the steering module reprogrammed, at my expense 0. 00, or replace the steering assembly, again at my expense Who are we? We are Lemberg Law, a Consumer Law Firm Lemberg Law is a consumer law firm helping victims of bad manufacturing and run-arounds from auto companies. We are ranked A+ by the BBB. Call our Helpline today! There is no charge unless we win. |
| Category | Electrical System, Service Brakes |
| Date | Mar 20, 2022 |
| State | TN |
| Description | “service- trailer brake system†light keeps coming on. It is super repetitive. It comes on about every 30 seconds. It's a loud beep that lasts quite a few seconds. Eventually, the beeping did not stop until the truck was stopped. Truck was just bought yesterday. Happens at any speed, even when stopped. |
| Category | Service Brakes |
| Date | Mar 01, 2022 |
| State | TX |
| Description | Yesterday afternoon I heard a beeping noise that was persistent and it said trailer brake check the same alert showed up today making it impossible to drive safely with the alert popping up every min |
| Category | Service Brakes, Hydraulic |
| Date | Feb 28, 2022 |
| State | VA |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated while driving approximately 35 mph, the assist brake warning light was illuminated and the contact had to depress the brake pedal to the floor to stop the vehicle. The contact took the vehicle to the local dealer, where it was diagnosed with needing the vacuum pump to be replaced. The vehicle was not repaired but was pending repairs. Upon investigation, the contact associated the failure with nhtsa campaign number: 20v603000 (service brakes, hydraulic). The manufacturer had not been informed of the failure. The failure mileage was approximately 37,000. |
| Category | Power Train |
| Date | Feb 17, 2022 |
| State | LA |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated that while driving at various speeds, the vehicle experienced shifting while shifting into a lower gear, causing the vehicle to suddenly lurch forward. The cause of the failure was not determined. The local dealer was notified of the failure but no assistance was offered. The manufacturer was not contacted. The failure mileage was 50,000. |
| Category | Power Train |
| Date | Feb 15, 2022 |
| State | AZ |
| Description | Transmission shrudder with low mileage |
| Category | Seat Belts |
| Date | Jan 28, 2022 |
| State | KS |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated that the seat belt straps for the rear driver's and passenger's side seats would no longer retract and were stuck between the seat cushions. The cause of the failure was not determined however, the local dealer informed the contact that the seat belt retractors were likely defective and would need to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 60,000. |
| Category | Visibility/wiper |
| Date | Jan 17, 2022 |
| State | MN |
| Description | When operating my truck two days ago, I smelled something burning. I then noticed a small plume of white smoke coming from the rear driver's side window area. I then noticed my rear defroster was on, which I shut of right of way. About 30 seconds later, I heard a loud pop and I noticed the rear driver's side portion of the window was shattered. I brought my truck to the dealership and they said they could not figure out what happened. I believe it is tied to a prior recall, but they said my truck was found not to have any issues at that time. I believe there is a direct correlation with the recall issued and what happened a couple of days ago. |
| Category | Wheels |
| Date | Jan 13, 2022 |
| State | LA |
| Description | Purchased 2018 truck new from dealer on 2/19. Came with 20" rims and the spare tire is on a17"rim. Currently, there is a gm recall # n212346510 and nhtsa campaign #21v985000 for this issue. My truck is not included. Hazard: based on failure of the anti-lock braking system when operating vehicle with three 20" rims and one 17" spare my vehicle should be include in the recall. |
| Category | Unknown Or Other |
| Date | Jan 12, 2022 |
| State | MN |
| Description | My rear back heated window on the passenger side popped and shattered the window while I was sitting in the passenger's seat waiting for my husband. The truck smelled like a sweet wire smell and then I heard a loud pop. I looked back and the back window panel was shattered. I do see that there were recalls on some of these windows. |
| Category | Electrical System, Service Brakes |
| Date | Jan 11, 2022 |
| State | FL |
| Description | Im getting a service trailer brake system soon message on dash. |
| Category | Service Brakes |
| Date | Jan 11, 2022 |
| State | ID |
| Description | While driving parking lot speeds, when I pressed the brake pedal, it was very very difficult to push causing me to nearly rear end the car in front of me. This happened intermittently during a short time frame (5 minutes). While standing on the brake pedal hoping to stop in time, the brake pedal shook like the antilock brakes were activating. This caused it to be even more difficult to stop in time. My vehicle is currently at my local dealership's service shop. When the issue occurred, a message stating "service brake assist" popped up in my display. |
| Category | Electrical System |
| Date | Jan 06, 2022 |
| State | ID |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated while driving approximately 70 mph, the trailer wiring harness system warning message was illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the wiring harness replaced; however, the vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 77,000. |
| Category | Electrical System, Service Brakes |
| Date | Jan 04, 2022 |
| State | NC |
| Description | At 50,000 miles the "service trailer brake system" error message appears constantly due to factory defects and its very common. These trucks should be recalled everyone is in danger on the roads and its a very common problem. I have not taken it to the dealer because I should not have to pay for this very common problem, it should be recalled. |
| Category | Seat Belts |
| Date | Jan 04, 2022 |
| State | MN |
| Description | Driver's side seat belt receptacle does not hold. It is difficult to get seatbelt to latch properly. Sometimes it latches and releases later. Dealer confirmed seat belt receptacle needed to be replaced. |
| Category | Power Train |
| Date | Dec 15, 2021 |
| State | UT |
| Description | During down shifting in lower gears while reducing speed , transmission makes a loud noise followed by vehicle hard lounging forward . Occurance is intermittent and unpredictable . In city traffic this has potential to cause an accident because vehicle lounges forward when speed is reduced . Vehicle has 18900 miles . Made in 2017 . |
| Category | Forward Collision Avoidance: Automatic Emergency Braking, Forward Collision Avoidance: Warnings, Lane Departure: Assist |
| Date | Dec 09, 2021 |
| State | NC |
| Description | Driver assist-lane keeping assist-forward collision warning-automatic emergency breaking life threatening when system fails and is intermittent . Vehicle has been said to be dangerous to drive by gm tech/can cause life threatening conditions. Fault has been confirmed by dealership. Warning lamp> "service driver assist system" friday 3 december 2021 at approximately 21340 miles. |
| Category | Electrical System, Service Brakes, Vehicle Speed Control |
| Date | Nov 21, 2021 |
| State | IL |
| Description | The truck displayed warning lights for abs, traction control, trailer brakes, and front park assist. Additionally speed control (cruise) did not function. This presented a safety issue. I took to dealer asap. They repaired by replacing left rear wheel speed sensor. Cost about 6. Appears to work correctly at this time. |
| Category | Electrical System |
| Date | Oct 05, 2021 |
| State | MI |
| Description | Battery dies after 5days of not being driven. Battery continues to go dead, dealer states nothing is wrong. No repairs were made. Stranded 5 times with a dead battery |
| Category | Engine |
| Date | Oct 05, 2021 |
| State | MI |
| Description | 47,012 miles radiator failure, leaking badly. Gm denied repair under warranty |
| Category | Power Train |
| Date | Oct 05, 2021 |
| State | MI |
| Description | Transmission is slamming violently during shifting, transmission fluid is dark and contaminated. Dealer says-" operating as designed, no issue found" also truck shakes and vibrates violently while driving |
| Category | Vehicle Speed Control |
| Date | Aug 30, 2021 |
| State | MI |
| Description | Vehicle suddenly went into reduced engine power while driving in heavy traffic. Vehicle immediately began to slow down and although there was some throttle response it was difficult to maneuver through traffic to get to the side of the road. This event happened around the 31,000 mile mark. The reduced engine power message came on, but I do not remember hearing an audible alert. Being a 40 year automotive technician for gm, I am familiar with pulling codes and replacing parts. I called the dealership to see if this was covered by warranty and was told no. After pulling the codes, I personally replaced the throttle body sensor and the accelerator pedal assembly, but the vehicle continued to go into reduced engine power mode. I took the vehicle into the dealership and they diagnosed the cause as a corroded connector. The connector was replaced and the vehicle was returned to me. After a little over one month and less than 1,000 miles the vehicle is once again going into reduced engine power mode. I can have my vehicle available for inspection if necessary. |
| Category | Power Train |
| Date | Aug 11, 2021 |
| State | FL |
| Description | Very very bad shudder vibration noticed mostly during light throttle acceleration of 30-64 mph (48-104 km/h) during steady state driving with the transmission not actively shifting gear.. |
| Category | Power Train |
| Date | Jul 16, 2021 |
| State | TX |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated that upon depressing the accelerator, the vehicle shuddered while upshifting. There was no warning light illuminated. The contact had taken the vehicle to a local dealer where they were unable to service the vehicle. The contact had also taken the vehicle to an independent mechanic who informed him that there was a tsb placed on the vehicle. He explained that the incorrect type of transmission fluid had been placed in the transmission which would cause the failure that he had experienced. The contact then called sewell buick gmc of dallas (7474 lemmon ave, dallas, tx 75209) where he was informed that he would be charged a diagnostic fee prior to the repair. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 45,000. |
| Category | Power Train, Steering |
| Date | Jun 17, 2021 |
| State | IL |
| Description | The contact owns a 2018 gmc sierra 1500. The contact stated while driving at various speeds, the vehicle lost power steering assist causing the steering wheel to become firm. The steering wheel jerked while turning and the vehicle stalled on several occasions almost causing a collision. The vehicle was taken to the dealer and the dealer informed the contact that the failure was related to technical service bulletin 18-na-161. The vehicle was not repaired. The manufacturer was made aware of the failure. The manufacturer promised to provide a callback. The failure mileage was 47,184. |
| Category | Air Bags, Electrical System |
| Date | Jun 08, 2021 |
| State | TX |
| Description | Check engine came on and says manufacture specific issues/codes. Safety restrain system. P10e4 |
| Category | Tires:bead, Tires:sidewall |
| Date | Jun 04, 2021 |
| State | MN |
| Description | All four oem bridgestone dueler a/t p285/45r22 m+s tires are showing premature cracking in sidewall near the bead/wheel. The cracks appear on the full circumference of the tire and vary in length from short to several inches. Depth of cracking is estimated to be 1/16" and growing. The tires, with date code 2318, were on the brand new truck when purchased from the dealership in aug 2018. The vehicle currently has 16k miles. Both the dealership and local tires plus chain have confirmed the issue, but there is not a suitable remedy. Bridgestone will not warranty the tires and replacement under the gm "warranty" is the same price as new aftermarket tires. I believe this is a pending safety concern. |
| Category | Air Bags |
| Date | May 24, 2021 |
| State | MI |
| Description | The contact owns a 2018 gmc sierra. The contact stated that while driving at 35 mph, when another vehicle had collided with the contact's vehicle which resulted in the airbags not deploying. The contact stated no warning lights were illuminated. The contact sustained a head injury and did require medical attention. A police report was filed. The vehicle was towed to a local dealer where it was in the process of being repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 25,000. The vin was not available. Vehicle has been repaired.*jb |
| Category | Structure:body |
| Date | May 14, 2021 |
| State | LA |
| Description | I left home to go to the store. While driving on the highway my sunroof exploded. There were no cars or truck in front of me or passing me. Nothing hit my truck. It sounded like a shotgun going off inside the truck. The sunroof exploded sending glass everywhere. I was driving on a 5 lane highway, it was raining, but not a bad storm. The road was straight and in good condition. It happened so fast I did not know what was going on. I pulled into a gas station to check my truck. I found glass all in the bed of the truck and most of the sunroof gone. I have taken it to the dealer as the truck is under warranty. I was told the warranty does not cover damage and so far no answer it they will cover it. I have had the truck for almost 3 years and it is nearing the end of the warranty. |
| Category | Steering |
| Date | May 12, 2021 |
| State | LA |
| Description | Power steering just goes out while driving (pulling into parking lot) and then comes back on causing an oversteering problem. |
| Category | Engine |
| Date | Apr 12, 2021 |
| State | CT |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that the vehicle vibrated abnormally while driving. The vehicle was taken to ingersoll auto of danbury (84 federal rd, danbury, ct 06810, (203)885-7774) for an oil change and the engine was flushed on four occasions. The contact stated that the vibration increased. The vehicle was taken to the same dealer and a tire rotation and alignment was performed. The contact was also informed that the tires needed to be replaced. The torque converter was also replaced however, the failure remained. The manufacturer was made aware of the failure and referred the contact to nhtsa for assistance. The approximate failure mileage was 47,000. |
| Category | Structure:body |
| Date | Apr 12, 2021 |
| State | KS |
| Description | Spare tire crank cable broke allowing spare tire to fall out from under the truck on the interstate at 70 mph. Spare tire slide backwards under my 5th wheel camper damaging the camper and flying off into the highway median. |
| Category | Engine |
| Date | Mar 22, 2021 |
| State | MA |
| Description | At 55000 miles the radiator started too leak gm would only pay 250. 00 dollars of the 876. 00 it cost |
| Category | Engine |
| Date | Mar 20, 2021 |
| State | MI |
| Description | While driving with the roads in a wet condition, for various lengths of time, and in different maneuvers, the service engine light will start flashing and the vehicle will begin to lose power. After a few minutes, the service engine light will go solid and the traction control light will illuminate. The vehicle loses more power. On braking, just before the vehicle comes to a complete stop, there is a clunk in the transmission and the vehicle lurches. This has occurred 6 times in the last 14 months. Upon investigation, trouble code p0308 shows in the obd tool. The issue could not be reproduce by the dealership so there has not been any resolution, just thoughts. |
| Category | Power Train |
| Date | Mar 06, 2021 |
| State | CA |
| Description | I have taken my truck to temecula valley buick gmc on 3 separate occasions after noticing my transmission shifts hard. I have experience clunking shifts both in the up shift and down shift, typically at lower speeds. There are times when the transmission shifts gears it propels the vehicle forward in a jerking fashion, very similar to a rear end fender bender. The last time I took my vehicle to the dealership, I was told that the vehicle is shifting at normal specs and if it keeps acting up, to bring it back when it is more consistent. The vehicle's warranty runs out in a few months. |
| Category | Engine |
| Date | Mar 05, 2021 |
| State | AL |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that a coolant smell would emit from the vehicle upon exit. The contact also stated that his vehicle had began to lose coolant at an abnormal rate and had to be frequently replaced. The contact took the vehicle to mcconnell automotive (3150 dauphin st, mobile, al 36606) where they confirmed that there was a crack in the radiator which resulted in a coolant leak. He was also informed that there was no recall on the vin and that the warranty did not cover the repair. The manufacturer was notified of the failure and provided the same information as the dealer. The vehicle was not repaired. The failure mileage was approximately 42,000. |
| Category | Engine |
| Date | Feb 01, 2021 |
| State | TN |
| Description | The radiator is leaking coolant without any real cause and I was told the entire radiator needs to be replaced. |
| Category | Power Train, Unknown Or Other |
| Date | Dec 25, 2020 |
| State | IL |
| Description | After cold starts when accelerating the transmission slips from 1st to 2nd and throws your body forward. After that first gear change it doesn't do it again until another cold start. Around 34000 miles I am getting a rumbling vibration through the dash and steering wheel when holding speed between 35-75 mph. The rpm guage will jump slightly and it will feel like going over rumble strips. Acceleration is very weak at times. Sometimes its ok. There has to be something done with these torque converters and transmissions by gm. Unacceptable for a 40-50k dollar truck! |
| Category | Engine |
| Date | Dec 16, 2020 |
| State | WI |
| Description | I have had my gmc sierra 1500 for almost 3 years. I have a little under 59,000 miles on the truck. A few thousand miles ago a tech at the gm dealer let me know that they had to add some coolant and it was something I should keep an eye on. I brought the vehicle back to have them look into it. They let me know that the radiator has a small leak. It is not big enough to have fluid hit the ground in my garage but it is loosing fluid. I looked online and saw that this is a common issue. I was told that it was not covered under warranty and it would cost a good amount to fix. I have had this vehicle for under 3 years and have had 5 issues without any of them being covered by warranty. This vehicle seems to be a lemon. |
| Category | Engine |
| Date | Dec 14, 2020 |
| State | TX |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that while driving at various speeds, the temperature gauge indicated that the vehicle was overheated. No warning light was illuminated. The vehicle was taken to beck & masten buick gmc north (11300 fm 1960 west, houston, tx 77065, (877) 380-8433) where it was diagnosed and determined that the radiator was leaking coolant and that the radiator needed to be replaced. Coolant was refilled in the vehicle. The dealer contacted the manufacturer for assistance with repairs. The failure mileage was approximately 47,000. |
| Category | Power Train |
| Date | Nov 20, 2020 |
| State | MO |
| Description | Have been to dealer 3 times transmission ruff/slipping on 1-2 shift |
| Category | Power Train |
| Date | Oct 16, 2020 |
| State | KY |
| Description | Truck shifts hard from 1st to 2nd gear and vice versa. When down shifting from 2nd to 1st it feels as if you get rear ended by another vehicle. It shifts hard when switching between drive and reverse with an audible "clunk" and jerking on the truck. |
| Category | Power Train |
| Date | Oct 02, 2020 |
| State | AR |
| Description | Hesitation when engine is cold shifting from reverse to drive. Some shift is so hard that it feels like being hit from behind. Took truck to dealership to correct the problem. They performed the tsb 18-na-355. This did not correct the problem. Dealership advised there was nothing else they could do about this issue. |
| Category | Electrical System, Power Train, Service Brakes |
| Date | Sep 28, 2020 |
| State | AL |
| Description | The first thing that happened was that all of the electrical systems on my truck went out and my truck would not start. It finally started but it would not move finally it would move but very slowly this happened on 11/20/2019 I have documentation through onstar for this incident. My brakes started slipping on 07/01/2020 and still do not work properly. My transmission has never shifted correctly. When I accelerate or when I slow down there is a shudder and a jerking sound. After sitting for a while when my truck is put in reverse it hesitates and then seems to jump into gear. |
| Category | Engine, Fuel/propulsion System |
| Date | Sep 13, 2020 |
| State | AZ |
| Description | After long periods of running and idle, vehicle stalls out has a hard time restarting. Gas paddle being press helps sometimes. Check code p2635 plus others (random secondary codes), come on. This has taken place in az where the ambient air temperature typically is over 100. Vehicle has been to gm dealer who says its vaporizing the fuel in the lines. Tsb pip5507b dose not include 2018, however the design hasn't changed. Conditions; long idle, hot weather, low speeds under 25 mph or idle. Location; az sonrona dessert, off-road, jobsite, city streets. |
| Category | Power Train |
| Date | Sep 07, 2020 |
| State | TX |
| Description | Hard shifting that started around 40000 miles and has progressively gotten worse. The same thing happened to my 2017 chevrolet silverado 1500 and at 90000 miles that vehicle's #3 sensor in the transmission failed. It appears this vehicle is on the same path. The transmissions in these vehicles are trash. It happens in lower gears. |
| Category | Power Train |
| Date | Sep 07, 2020 |
| State | FL |
| Description | The transmission failed at 32,000 miles slipped so bad could hardly drive it home on highway i95 jacksonville florida. Finally got a dealer appointment after over 2 weeks of waiting without the use the vehicle. They replaced the fluid and said it was now good. Still tends to slip I asked why they were not replacing the whole unit said no need as my warranty is almost up? |
| Category | Equipment:appliance:air Conditioner |
| Date | Aug 31, 2020 |
| State | SC |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that the air conditioner did not cool without warning. The vehicle was taken to the king cadillac dealer, located at: 1700 w evans st, florence, sc 29501 where it was diagnosed that the condenser needed to be replaced. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 50,000. |
| Category | Service Brakes |
| Date | Aug 15, 2020 |
| State | GA |
| Description | I received a recall notice for a brake problem on my truck. The recall gave a location to take my truck for service. When I contacted that dealership they said it was a canadian truck and they couldn't perform the recall repair. So I called the gm hot line they said I had to take it to canada for the repair and that was the only option. |
| Category | Suspension |
| Date | Jul 24, 2020 |
| State | TX |
| Description | When driving the truck starts to rattle as is I was driving on a bumpy road. It is not continuously but id happens often |
| Category | Power Train |
| Date | Jul 14, 2020 |
| State | AK |
| Description | I have been noticing a shudder and hard shifting intermittently when driving about 30-60mph and I took it into the shop they said they can not duplicat the issues so I take it back and it started doing it more. I took the truck back to the shop again and yet again they told me they can not duplicate the issue. No here I am at 17k miles on is still doing it and shiftting hard and now there is a knocking noise. I talked to the dealer ship and they said its under warrany still just drive it tell it get worse. |
| Category | Power Train |
| Date | Jul 02, 2020 |
| State | TX |
| Description | While under power and driving, the truck experiences noticeable vibrations that seem to come from the drivetrain. |
| Category | Visibility:defroster/defogger/hvac System |
| Date | Jun 29, 2020 |
| State | AL |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that the air conditioner was inoperable, causing visibility issues while driving. Due to the failure, the defroster/defogger system was inoperable. Mcconnell automotive (3150 dauphin st, mobile, al 36606, (251)476-4141) was informed of the failure. The contact was informed that the vehicle was not subjected to a recall. The dealer provided an estimate of Who are we? We are Lemberg Law, a Consumer Law Firm Lemberg Law is a consumer law firm helping victims of bad manufacturing and run-arounds from auto companies. We are ranked A+ by the BBB. Call our Helpline today! There is no charge unless we win. |
| Category | Power Train |
| Date | Jun 24, 2020 |
| State | FL |
| Description | Purchased vehicle brand new from dealership and from day one, I notice the power train slow to shifting from gear one to two. The vehicle hesitates and sometimes shifts hard only during cold starts. Every time I take it in for my schedule service I report the same issue to my service advisor along with the service manager at the gmc dealership. They say that it is a normal problem and they know about it. The last schedule service I told them about the same problem, this time his service tech test drove vehicle and said torque converter was shuddering causing vibration. The solution he said they changed the transmission fluid. Today I still notice the same issue and will report to the dealership next time I take in for service. I have read this is a common problem from the manufacture since putting in an 8 speed transmission. I feel this is a safety issue and some day I may feel that the transmission may lock up on me and may cause an accident. *tr |
| Category | Power Train |
| Date | Jun 11, 2020 |
| State | NY |
| Description | When truck is in motion shifting from reverse to first/second gear it jumps forward into gear. There is a hesitation shifting into gear. It is a very well known problem with the 8 speed transmission. I have been in contact with the dealer but 3 different times. The know the problem as does gmc. They actually can fix the problem. But will not do anything until gmc sends out a technical bulletin. There has been an unbelievable amount of complaints. I understand gmc is hesitant because they may have to replace transmission and or torque converter which would naturally cost a lot of money. But also I understand changing to a different transmission fluid will help. But dealer will not do it. This has been going on since the day I bought it brand new and I only have 5700 miles on it. I have not had accident because of this. But concerns me with the hesitation and jumping in to gear. Also it does not do it every single time. Depends on your take off speed. *tr |
| Category | Power Train |
| Date | Jun 01, 2020 |
| State | OR |
| Description | I bought this vehicle new from day one I noticed the truck was jerking between 2nd gear and third. Only when cold I figured it was normal. I have 11,000 miles now and the jerking is worse and does it when I hold a speed between 45mph and 50mph also. When I am coming to a stop it hit hard into 1st gear and when I take off it hits hard into 2nd gear. *tr |
| Category | Engine And Engine Cooling, Unknown Or Other |
| Date | May 20, 2020 |
| State | KY |
| Description | Condenser on ac leaking at same location as the 2014-2017 my. Warranty was out due to mileage but truck is only 2 years 3 months old. Blowing warm air when ac was turned on. *tr |
| Category | Power Train, Steering, Unknown Or Other |
| Date | Apr 23, 2020 |
| State | CA |
| Description | A/c stops working 2.) mechanic does vacuum test and replaces refrigerant (0) freon 3.) a/c is blowing hot air again after 3 days; refrigerant completely gone 4.) mechanic runs dye through lines to find the leak, replaces refrigerant again and states the problem is compressor failure (0) again 5.) the overall fix would be to replace the compressor ( Who are we? We are Lemberg Law, a Consumer Law Firm Lemberg Law is a consumer law firm helping victims of bad manufacturing and run-arounds from auto companies. We are ranked A+ by the BBB. Call our Helpline today! There is no charge unless we win. |
| Category | Power Train |
| Date | Apr 15, 2020 |
| State | TX |
| Description | The front end of my truck has an very noticeable intermittent rumble and shake when I'm holding steady around 1200 rpm and 45 mph. My rpm gauge will surge about 50-100 rpms when it rumbles. If I speed up or slow down it goes away. My wheels and tires are balance so that not the issue and my drive is smooth otherwise. *tr |
| Category | Seat Belts |
| Date | Mar 14, 2020 |
| State | TX |
| Description | The back middle seatbelt broke shortly after the vehicle was purchased new. |
| Category | Power Train |
| Date | Mar 09, 2020 |
| State | NJ |
| Description | I have a 2018 gmc sierra denali, when the vehicle is cold, usually first thing in the morning, the truck starts out in first gear and then feels like it lacks power or transmission is slipping and then bangs into 2nd gear. The more I drove the truck the worse it got. While driving down the road there is a vibration within the truck. The faster you go the more of a vibration you feel. During the vibration the steering wheel is not shaking and when you let go of the wheel the truck stays straight, so it's not the front end. Took the truck to the dealership where it was purchased, pellegrino gmc, which is a 30 minute drive and they couldn't duplicate the problems. The service advisor was advised prior to my appointment, that the banging into gear only happens when its is cold. He advised me that what I was feeling was a normal shift for my truck. I advised him about the service bulletins and he stated that it didn't pertain to my truck. The mechanic test drove my vehicle for 13 miles and didn't feel the vibration. He checked the engine codes and found none. I have had the truck a little over a year and it has 6000 miles on the odometer. |
| Category | Power Train |
| Date | Feb 26, 2020 |
| State | WI |
| Description | Jumps into gear hard from 1st to 2nd gear under 25 mph very dangerous when on icy roads and also down shifting coming down from a hill rpm's stay high even though you aren't going very fast less then 17000 miles on it had it too the dealer nothing they can do just document it |
| Category | Electrical System |
| Date | Feb 23, 2020 |
| State | LA |
| Description | My truck locked itself with the engine running when I was parked in the driveway. Also have had the back driver side window roll itself down part ways without me initiating it. Another occasion I put the truck in gear to drive position and the brake or something had it locked preventing me from moving either direction ie; drive or reverse. Was then parked in home garage and attempting to back out. |
| Category | Service Brakes |
| Date | Jan 29, 2020 |
| State | SC |
| Description | Dealer completed brake system recall on 10-04-2019 n 192268490, now I read about the recall repair may have not fixed problem, request assurance that problem is fixed. |
| Category | Steering |
| Date | Jan 26, 2020 |
| State | NY |
| Description | Vehicle was being driven when suddenly the power steering quit working and vehicle was very difficult to turn without extreme effort. |
| Category | Power Train |
| Date | Jan 07, 2020 |
| State | TN |
| Description | Transmission shifts very hard from first gear to second gear when in motion. It also has a violent shudder when it is trying to select a different gear, most apparent around 35mph. If brake isn't pressed hard enough, shifting out of park could cause vehicle to run into something due to the hard shift when stationary. |
| Category | Power Train, Structure:body, Wheels |
| Date | Dec 18, 2019 |
| State | 00 |
| Description | I own a gmc sierra which is 14 months old, purchased in dubai uae from alghandi auto. The last service for 40000 kms was done on august 8th, 2019 and no problem was highlighted except the battery that was subsequently changed. On friday early morning (sep 27, 2019), we have escaped a major accident on sheikh zayed road on account of the front wheel axle that just broke/came apart while driving, causing the front right wheel to detach from the vehicle, subsequently skidding to the right causing major damage to the suspension and many other parts in the vehicle. This could have caused even death of my son who was driving the vehicle. I would appreciate an immediate call from your office to resolve this as I am no longer interested in driving this car that can cost me & my family our lives. This needs to be done immediately as I would otherwise be in the process of seeking legal advice against gmc. *jb |
| Category | Wheels |
| Date | Dec 10, 2019 |
| State | GA |
| Description | The factory wheels do not grip the road. This was from day 1 of getting it brand new from the dealer. This has led to spinning the tires, fishtailing, and sliding while braking. This happens with even moderate amounts of pushing the gas pedal or braking well ahead of a slow down or stop in traffic in front of you. This is very dangerous and takes away the drivers ability to maneuver as we should. |
| Category | Power Train |
| Date | Nov 27, 2019 |
| State | VA |
| Description | The truck shifts very hard - from what I've read online, gm knows of the issue but will not "fix" the issue -- only 26k miles on the truck |
| Category | Power Train |
| Date | Nov 27, 2019 |
| State | TX |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. While driving, the vehicle failed to shift into gears, switching from v8 to v4. There were no warning indicators illuminated. The vehicle was taken to classic buick gmc arlington (1400 e interstate 20, arlington, tx 76018, (817) 264-7782), but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 48,000. |
| Category | Power Train, Service Brakes |
| Date | Nov 25, 2019 |
| State | IL |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. When the contact shifted into drive, the vehicle lunged forward with the brake pedal depressed. As a result, the vehicle crashed into a handicap sign. There were no injuries. Prior to the crash, the vehicle was taken to bill kay chevrolet (located at 601 ogden ave, lisle, il 60532, (630) 968-2900) to be diagnosed due to hard shifting. The contact was informed that a transmission re-learn of the software was needed to correct the hard shifting; however, the failure became more pronounced. The contact stated that the failure was intermittent. The vehicle was not repaired. The manufacturer was informed of the failure and declined to assist. The approximate failure mileage was 13,000. |
| Category | Power Train |
| Date | Nov 19, 2019 |
| State | GA |
| Description | I experienced failure of the transmission to sift up or down on several occasions between 11/01/2019 and 11/11/2019. On 11/08/2019 I was monitoring the transmission temperature, and when the transmission temp reached 164 deg, the transmission would stop shifting properly at 25 to 30 mph, and the trans temp would jump to 192+ deg. Transmission seemed to slip and the vehicle would not accelerate. Rpms jumped to 3k-4k rms but speed would not change up or down. Contacted the dealership and made an appointment for 11/11. On 11/11 I drove the to the dealer 10 miles away. I monitored the trans temp as I drove, and no shifting issues until just before reaching the dealership (trans temp had reached 154 deg). I road with the dealer rep for a test drive and he was able to duplicate the problem at 30-mph and trans temp quickly rose again to over 192-deg. Dealer rep tried to use the manual shift option but even using that he was unable to get the transmisson to shift properly ans engine rpms exceeded 5k and stayed there until the transmission shifted into gear. Dealer rep stated that is not good during the test drive. Arriving back at the service department the dealer rep that test drove the vehicle told the service dep amanger the vehicle was not safe to drive. I was told the transmission would need to be torn down to figure out what the problem was and it might be after the first of the year before they would have it fixed due alack of parts due to the recent strike, and a bag log of vehicles already waiting repair parts. Other complaints that seem to match mine are nhtsa ids: 11193281, 11230193, 11221668, and 11205523. Issue is a serious safety issue if the vehicle cannot accelerate safely to merge with traffic. |
| Category | Power Train |
| Date | Sep 16, 2019 |
| State | SC |
| Description | When the truck is driven first thing in the morning the transmission shifts from first gear into second gear the transmission shifts very hard or hesitates causing the driver to surge forward almost as if the vehicle were hit from behind. |
| Category | Power Train |
| Date | Sep 12, 2019 |
| State | IN |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. While attempting to accelerate, the contact noticed a hard shift with the eight speed transmission. The contact thought the transmission had fallen off the vehicle. The contact felt this was a defect, especially during cold starts in the morning. Ray skillman southside buick gmc (8424 us-31, indianapolis, in 46227, (317) 497-0711) was contacted and provided a report indicating that this was a normal occurrence. The manufacturer was not contacted. Through online research, the contact believed he had a case with the lemon law. The failure mileage was 4,768. *pm*jb |
| Category | Seats |
| Date | Aug 21, 2019 |
| State | GA |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that the driver's seat made popping noises and moved from side to side while the vehicle made turns. The manufacturer issued an unknown technical service bulletin, but it was not covered under a warranty. The vehicle was taken to colonial buick gmc (3965 atlanta hwy, loganville, ga 30052, (678) 922-9606), but they refused to inspect the condition of the seat. The dealer also refused to notify the manufacturer. The dealer acknowledged the service bulletin, but claimed that they could not duplicate the failure. The manufacturer was not contacted. The vehicle was not diagnosed or repaired. The failure mileage was 28,000. |
| Category | Power Train |
| Date | Aug 13, 2019 |
| State | MI |
| Description | Tl* the contact owns a 2018 gmc sierra 1500. The contact stated that the transmission shifted from first to second gear while driving 15 to 20 mph. Also, when driving on the highway for a long period of time, the transmission would not downshift until the vehicle came to a stop, and would then fail to move forward. There were no warning indicators illuminated. The vehicle was taken to golling buick gmc (1491 s lapeer rd, orion charter township, mi 48360, (248) 693-5900), but the failures could not be duplicated. On another occasion, when the vehicle was engaged in two wheel drive, the rear end failed to unlock and would jerk. The contact drove the vehicle to the same dealer where diagnostic testing was completed, but a failure could not be found. The vehicle was not repaired. The contact stated that the failure recurred three times. The manufacturer was not notified of the failures. The approximate failure mileage was 16,000. |
| Category | Engine, Unknown Or Other |
| Date | Jul 23, 2019 |
| State | MA |
| Description | Bucking and surging when switching gears. Hard bang when trying to switch. Surged forward at a complete stop. |
| Category | Power Train, Steering, Vehicle Speed Control |
| Date | Jul 23, 2019 |
| State | AR |
| Description | Truck shift into gear very roughly. Shakes when driving through all speeds. Feels as if something is falling off the truck. |
| Category | Tires |
| Date | Jul 16, 2019 |
| State | CA |
| Description | Tl* the contact owns a 2018 gmc sierra 1500 equipped with goodyear wrangler sr-a tires, size: 265/60r2. While driving 75 mph, the contact noticed that all the tires had bubbles. The vehicle was taken to coulter buick gmc tempe (7780 s autoplex loop, tempe, az 85284, (480) 448-2471) for diagnostic testing where it was confirmed that the tread separated from the tires, which needed to be replaced. The tires were not replaced. The manufacturer was notified of the failure and informed the contact to call goodyear. The manufacturer provided case number: 1692419. The approximate vehicle failure mileage was 24,600. The tire failure mileage was 932. |
| Category | Power Train |
| Date | Jul 08, 2019 |
| State | KY |
| Description | After truck has set for a while and start to take off from a stand still and it goes to shift from 1st to 2nd it will hard shift and truck will sometimes lurch forward. When accelerating slowly truck with shutter when shifting gears, almost like it can't decide to shift to the next gear. Once truck is warmed up this no longer happens. |
| Category | Service Brakes, Structure:body |
| Date | Jun 29, 2019 |
| State | HI |
| Description | My 2018 gmc sierra slt's break pedal becomes extremely difficult to press, and I can hear something that sounds like air coming from the pedal. This happens especially at lower speeds. This caused me to crash into a concrete wall and damage my truck. My truck has only 10,000 miles. |
| Category | Engine, Power Train, Steering |
| Date | Jun 21, 2019 |
| State | WI |
| Description | No transmission power regardless of the gear shifter position. I turned the engine on and off several times trying to get a solution, no luck. I returned to the vehicle 5 minutes later and did get it to move,,,would only go 25 mph at 3000 rpms. I was in the middle of wi not near any major dealership on-star was useless saying I had a major engine problem and the computer was trying to protect the engine. I was directed me to a chrysler dealer ship, who told they could not get me in for 2 weeks, suggested another branch which was over 45 miles away. I drove 5 miles to a friends house and was able to find a dealership in janesville, wi (fagan). When I started the vehicle to drive to janesville, the transmission did work. Fagan spent 2 hours working on it, and could not find a cause for the problems, they checked every computer, could not duplicate what happened. They reprogrammed all the computers. Then in cincinnati, oh the power steering assist went "off", while staionary. I tried restarting several times to no avail, drove the 3 miles left to the g'kids house, no power steering, trailer problem lighjt on, no rpm or mph needles moving. Called local dealership (borcharding) and they suggested I drive it to their location 12 miles away. When I started it, the power steering was back on, but the unit would not get out of 2nd gear, ran 40 mph at 2500 rpm, warning lights all on, engine light still on. Next moring I started the vehicle, everything was okay including the transmission problem, but still had the "check engine on", the dealership kept it (2) days, involved gmc engineers, could not determine the cause for all the problems,including loss of "steering assist". They drove it over 50 miles on two trips,could not duplicate what happened. They told me it was some kind of computer problem, but could not determine, they reset everything again. |
| Category | Power Train |
| Date | Jun 16, 2019 |
| State | AR |
| Description | Upon starting the engine the vehicle makes a clank sound and either surges forward or backwards slightly. It seems to do it more often on a light incline. Local chevrolet ( gm) dealer has looked over twice, no suggestions made or given to me. |
| Category | Fuel/propulsion System, Power Train |
| Date | Jun 13, 2019 |
| State | TX |
| Description | When 1st cranking truck and put in drive motors rrev up and shifts hard to second. Occasionally when I out in reverse it will sit there n not shift in. Then when it does it shifts hard. When accelerating the truck it sounds like a clattering sound under drivers side under hood. Tried different type of gasoline and nothing changes. Gmac needs to do a recall on both of these items. I am very disappointed in my gmc and gmac |
| Category | Power Train |
| Date | May 11, 2019 |
| State | UT |
| Description | Daily the transmission has a hard shift from 1st to 2nd gear. Potentially causing me to loose control of the vehicle. Ive had it in the gmc shop 3 times and gmc is unable to fix the problem. After the vehicle sits for periods of 4 hrs or more the problem reoccurs. This is a serious political saftey hazard in the 8speed transmission and needs to be recalled and fixed with a new transmission. |
| Category | Fuel/propulsion System, Unknown Or Other |
| Date | May 06, 2019 |
| State | IN |
| Description | The sierra surges from park to reverse and drive. I bumped a vehicle today, and the surge has become an issue this week and there is not even 9,000 miles on the truck. The afm is rough shifting between v8 and v4 mode too. None of this was an issue until recently. My speakers also vibrate like a blown speaker on high definition radio, but not on regular radio stations. |
| Category | Power Train |
| Date | May 03, 2019 |
| State | CA |
| Description | At 40mph loud bang felt like we were rear ended, sounded like we were rear ended, huge jolt forward nearly causing accident, possible back injury, seats jolted, looked behind us and nothing there. Was driving at 30-35mph and just accelerated slightly to pass a car when this happened. City street 3 lanes. Dealer turned us away because could not duplicate for them. Gmc said case was accelerated no call back as of yet. |
| Category | Power Train |
| Date | Apr 29, 2019 |
| State | OH |
| Description | Transmission has shudder and now wont downshift properly while driving |
| Category | Power Train |
| Date | Apr 15, 2019 |
| State | TN |
| Description | Document id 4605342 #16-na-361 : information on transmission harsh 1-2 shift upon first start up/shift of the day under light throttle this gm bulletin was issued jul 21, 2017 on numerous vehicles and according to this bulletin the problem does not have a resolution. The bulletin clearly states changing the entire transmission will not solve this issue. This is affecting my gmc with the 8 speed transmission. Gm has known about this issue but has none the less sold the vehicles to consumers without disclosure. Neither gm or darrel waltrip gmc in franklin tn disclosed this issue prior to the sale. The service dept at the dealer admitted the issue cannot be repaired and told me gm is unwilling to do a trade assistance or buyback. Gm claims nothing is wrong with my car yet has a clear document that says otherwise. |
| Category | Power Train |
| Date | Apr 02, 2019 |
| State | MD |
| Description | While the truck is in motion and when accelerating around 15-20 mph the transmission will sometimes "hunt" for a gear causing the truck to not accelerate. This results in a mild jerking of the truck when it is trying to accelerate and feels like the transmission is slipping/skipping. This is more apparent when going up a grade versus on a flat surface. So I have to push harder on the gas pedal waiting for the truck to shift. This is a safety issue since when not properly accelerating into traffic, an accident is more likely to occur. I see that this issue has already been reported in another incident on your website. I have had this issue since I bought the truck on 02/2018 and the reason I have waited to report is due to the dealer stating to allow the computer to update/learn your driving habits. I have 11,000 miles on the truck now and still experiencing the issue. |
| Category | Exterior Lighting |
| Date | Mar 08, 2019 |
| State | AA |
| Description | Passenger side headlight jiggles up and down constantly over every small bump. Very distracting and leaves many black areas on the road from lack of light. Fix this immediately! |
| Category | Service Brakes |
| Date | Feb 28, 2019 |
| State | AZ |
| Description | Driving slowly in bumper to bumper traffic. I was stopped with my foot on the brakes, and the truck started moving forward. I thought engine surge, but it was not. I pumped brakes hard and the truck stopped. This has happened 2 times. |
| Category | Power Train |
| Date | Feb 14, 2019 |
| State | FL |
| Description | Extremely hard shifting on lower gears. When slowing when it goes from 2nd to 1st it feels like I got rear-ended. Not all the time but once a day at least. It also shudders when slowly accelerating in traffic, sometimes the rpm goes way high and it lurches forward when it upshifts. |
| Category | Service Brakes |
| Date | Feb 13, 2019 |
| State | FL |
| Description | I was in the bank atm drive through and the guy ahead of me started to go, I barely pushed the gas pedal and he decided to stop. I hit my brakes and the truck was hard to stop, almost like the gas pedal response was still in the go mode before it had the chance to react to my input of taking my foot off the gas to apply the brakes. I can duplicate this behavior all the time. |
| Category | Exterior Lighting |
| Date | Feb 08, 2019 |
| State | TX |
| Description | Passengers side low beam jiggles up and down when going over small bumps. Dealer tells me its a common issue with the projector style headlights but cannot be replaced under warranty until gm recognizes it. |
| Category | Power Train |
| Date | Jan 08, 2019 |
| State | AZ |
| Description | Brand new 2018 sierra 1500 z71. When driving the truck for the first time after sitting for a number of hours (6+hrs) the truck experiences a "hard" 1-2 shift. This occurs 100% of the time when I leave for work in the morning. Sometimes it feels like the transmission slipped, this is the hard shift feeling. Other times the truck loses acceleration, cuts out, feels like the truck has ran out of fuel. Only happens when the truck has been sitting for a long period. When I took the truck in to have this looked into I was told this is a known issue without a resolution. Ive attached a scan'd copy of the document they gave me #16-na-361. |
| Category | Electrical System, Service Brakes, Unknown Or Other |
| Date | Dec 21, 2018 |
| State | WA |
| Description | My vehicle is hacked anytime I am driving the vehicle I am not in full control. The vehicle steers itself left or right while driving, the brakes are always on while driving sometimes braking harder but always on. The infotainment system has many glitches. This vehicle has been back to the dealership more than 15 times has been out of service over 35 days gm even flew a engineer/tech to inspect the vehicle and says they couldnt find anything. Therefore this vehicle is hacked there are so many issues and glitches and the fact that the truck only acts like this when I am driving no one else. Like it can be turned on and off instantly. I have tons of videos pictures and supporting documents backing this. I need help this is a serious issue and there is so much more to it than I can type here someone please get ahold of me to help or point me in the right direction. This vehicle will be returned to gm soon as they are doing a vehicle replacment per all the issues but this needs further attention because if this can happen to me it can happen to anyone . Please help |
| Category | Steering |
| Date | Dec 10, 2018 |
| State | AZ |
| Description | The truck was being turned on to resume driving after brief stop. The vehicle engine turned on but vehicle steering locked, front and rear exterior lights went out. After truck turned off for 20 minutes. The steering wheel unlocked, the exterior lights turned back on. I called gmc roadside services-! They recommended towing vehicle to dealership. |
| Category | Structure:body |
| Date | Dec 05, 2018 |
| State | AZ |
| Description | The sunroof in the 2018 gmc sierra exploded outward of the vehicle, dropping glass shards into the cabin. The vehicle was in motion at about 15 mph in a neighboorhood street with no overhanging objects that may have contacted the glass. The weather foreceast for the day was sunny with a high of 76 degree fahrenheit. No external contact was made to the sunroof glass prioir to the incident. No investigation was desired by both the local dealership or general motors on the incident itself. Both have directed me to making an insurance claim to rectify the situation. |
| Category | Engine, Fuel/propulsion System |
| Date | Nov 21, 2018 |
| State | MN |
| Description | Fuel injection seals #4 o-ring split - leaking fuel - pooling gas on manifold. Took vehicle in for smell of gas, lack of acceleration and poor gas mileage. This is known issue based on the service bulletin 18-na-137 - vehicle has less than 6000 miles |
| Category | Wheels |
| Date | Nov 17, 2018 |
| State | MA |
| Description | New truck with 15 miles. Bad vibration seems to be coming from both front and rear area at speeds of 64 to 72 possible tires out of balance or alignment. |
| Category | Power Train, Wheels |
| Date | Nov 06, 2018 |
| State | MA |
| Description | Since day 1 of purchasing new,to current date, there is vibration at idle. There is vibration at highway speeds of 60 mph plus. It has been to the dealer 5 times for testing. This is a known problem with thousands of vehicles. Gm says it meets their specifications. The dealer balanced the tires 3 times, no luck. The dealer replaced the tires, same issue. I am told the vibration at idle is normal. This problem is distracting when driving. I have been dealing with gm and the dealer for 7 months with no resolve. Https://www. Kshb. Com/news/local-news/investigations/general-motors-customers-frustrated-over-shaking-in-pickup-trucks this link of a news clip shows what is happening to my vehicle. This happens every day, so ignore the date I entered below. I have videos but the file is too large to download. *tr |
| Category | Steering |
| Date | Nov 05, 2018 |
| State | TX |
| Description | I was driving 70 mph down highway 75 in mckinney tx, when my steering completely locked up. Luckily I managed to get truck stopped and towed back to dealer. This could easily have been a fatality accident. |
| Category | Visibility/wiper |
| Date | Sep 11, 2018 |
| State | WI |
| Description | I am 6'8 and have notice a serious increase in the blind spot behind the rear view mirror. On approaches to intersection, vehicles are hidden and I have had 3 bear miss collisions in the the same number of months. This is my 3rd gmc sierra and the issues appears to be related to elevated seat which can not be lowered to a safe level. |
| Category | Steering |
| Date | Jul 01, 2018 |
| State | ND |
| Description | When driving the vehicle it steers very hard like a lack of power steering than all of a sudden it feels like the power steering kiks in causing a over steering situation . Feels like you have no control. Have talked to other owner who has same issue. Pickup has 40 miles on it. It happens every time I drive it. |
| Category | Steering |
| Date | Jun 20, 2018 |
| State | ME |
| Description | When in traffic at any speed the steering wheel will actually turn to the left. It takes you buy surprise and it's a strange feeling. I was told by the dealer their is no issues. Very scary! It happens at anytime and without warning. |
| Category | Steering |
| Date | Apr 30, 2018 |
| State | PA |
| Description | Steering pulls to left when driving at any speed, and terrain. Pulls enough to turn you into oncoming traffic if you do not correct. Took to dealership and was told nothing was wrong with the truck. Steering problem continues and is definitely a safety issue. |
| Category | Unknown Or Other |
| Date | Apr 15, 2018 |
| State | WA |
| Description | The vehicle operates unpredictably when pressing on the gas pedal causing unsafe driving conditions. When pressing the gas pedal, any one of the follo^wing conditions may occur. 1.) sometimes the rpm's decreasea. 2. )sometimes the transmission hunts several times. 3.) sometimes the vehicle speed surges. 4.) many times the engine hesitates for a long period before the rpm's increase. This unpredictable operation is more apparent when the engine is loaded like going up hills and especially when heading into strong winds. The unpredictable operation is extremely unsafe when driving on ice covered roads. This vehicle is also considered an "off-road" series vehicle. This unpredictable operation is very unsafe, even dangerous, on aggressive trails. When driving in steep trails, drivers require feedback from their vehicle especially how the vehicle or engine responds as the gas pedal us depressed. |
| Category | Air Bags |
| Date | Apr 14, 2018 |
| State | TX |
| Description | Takata recall : still waiting on a replacement. No action taken by the local dealer. The airbag is still intact, but the vehicle is stored outside in the southeast texas heat and I am concerned about its fragility because of this. Last contact with the dealer was in 2017 |
| Category | Service Brakes |
| Date | Feb 05, 2018 |
| State | TX |
| Description | Left rear brake line appears to be installed in harms way. That is, an object on the road could be struck which could tear away the brake line resulting in loss of braking power. Other vehicles of the same type on the dealer's lot were observed to be of the same design. If this brake line is lost due to road hazard, will braking power be lost? Please advise. Thanks. |
| Category | Air Bags |
| Date | Feb 04, 2018 |
| State | CO |
| Description | Struck a deer with the vehicle at approx. 75mph. The driver side airbag deployed. Control of the vehicle was maintained and there was no sudden deceleration. The cover of the steering wheel, which bears a plastic gmc logo that is heavier than the rest of the material blew exactly on the corner of the g. Due to the location of the split the logo hit my wrist like a hammer causing nerve damage and permanently stamping the gmc logo on my wrist. I currently possess all deployed srs components along with the acm that was in the vehicle at the time of deployment. The damage, aside from the srs components, was only to the bumper, grill, and condenser with minor damage to the core support where the bumper mounts (radiator, fenders, and hood were not impacted). I question the safety of the way the steering wheel split as the edge of the g has a sharp edge that could have potentially slit my wrist open. I also question the deployment of the bag due to no sudden deceleration and that if the bag had not been deployed there would have been no injury in this loss. Also I had previously had an issue where I started the vehicle on the first cold day, all warning lights on dash came on and advised me to service all systems. I turned off the vehicle and restarted and there was no warnings present. After the loss and repairs I experienced this same issue but it would not resolve by restarting the vehicle. They pulled codes at the dealership and performed a software update and I have not had this problem since. It was cold during the loss but the vehicle had been running several hours as I was driving cross country at the time. |
| Category | Electronic Stability Control, Service Brakes, Steering |
| Date | Jan 25, 2018 |
| State | WA |
| Description | When driving vehicle at any speed it steers to the left or right . Not a simple alignment pull or wander I can feel the wheel as to which way it wants to steer at random. If not paying attention or if you were to let go of the steering wheel it will go off the road absolutly not safe to drive. While accelerating the vehicle feels like the brakes are being applied and does not accelerate I have to give excessive gas petal throttle to get up to speed. There have been times I have came home from as short drive and I can smell the brakes they smell burnt hot. One instance I was merging onto the highway and the truck struggled to get up to 60mph I had the petal floored and the truck would not go over 65mph the engine was @ 5000rpm maxed out it would not shift nor go faster than 65mph. Randomly transmission thunks thud and slams into gears when the automatic transmission is shifting at low speed below 50. While driving truck feels like the drive tran is bound up like brake is applied on individual wheel(s) . I have had nothing but problems with this truck very weird issues that don't make mechanical sense. Also the instrument cluster gauges and infotainment screen don't light up just black screens after starting vehicle. Happened 2 times now. Radio was off while driving then came on full volume without touching anything. Service stability /steering warning came on once. I can hear front transfer case engage and disengage at low speeds randomly when in 2wd. Randomly stuck in low gear when accelerating from a stop. And you don't have to use the brakes much to stop you because as soon as you let off gas petal the vehicle nearly comes to a stop without applying brakes. And if you are turning it will at times come to a complete stop. Has been to dealer 6 times now they say everything checks out. There is a major computer issue or is hacked per all ive researched. |
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Brian Jones spent more than 20 years working as an ASE Certified Master Tech and Parts Specialist at multiple dealerships. Brian has become an authority in the industry, traveling across the country to consult for car dealerships and contributing his expertise as a writer for several major automotive publications. In his spare time, Brian enjoys working on pickup trucks, muscle cars, Jeeps and anything related to motorsports.
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I bought a 2018 GMC Sierra brand new from a dealer called Ron Smith in Merced ca and let me tell you that GMC sierra is the worst vehicle that I have ever owned I have had it in the shop about 11 times and all they do is give me the run around that they cant find anything wrong even when I can see it in their face that they know exactly what the problem is but their so scared of saying anything to the customers it is curently in the shop as we speak of course it is the same problem that it makes when going steady from a high gear to a complete stop feels like if someone rear ended my vehicle except this time it has been going on for so long that the check engine light turned on maybe this time theyll actually fix something and stop lying never again will I purchase a Gmc EVER again. Switching to Ford or Ram
Bought a brand new 2018 GMC Sierra SLT, have 54,000 miles on it and transmission is slipping and has a hard shift. Trembles and stalls as if to shut off. Check engine light and traction control lights go on. Going to take it to mechanic tomorrow to see what the deal is.
Transmission Slipping and the engine light come on when I try to crank the truck.
I have a 2018 GMC Sierra, fully loaded, 4×4, tow package, etc. I have been experiencing the hard shifting constantly since I bought the truck. Have taken to dealer several times on the issue, of course they can’t find anything wrong with it or replicate the hard shifts, shudders. They know. Thinking of going to a another brand. Tired of the lies.
I bought my GMC Sierra 1500 4×4 new and now have 40000 miles on it. Other than oil changes and tire rotations I haven’t needed to do anything. I have been all over the United States with this truck pulling a RV doing speeds up in many areas up to 90 mph with heavy loaded in bed and towing a , up to 5000 lb. RV Trailer. I has done nothing but perform. So I will be on stand by with this website to list my many issues with this awesomely beautiful , luxurious truck the first time it does anything other than perform better than any truck I have owned before .
MY 2018 SLT Transmission started shuddering at 69000 Miles thought it was a tire. Put on new set of tires $1500 and still have shudder and 70,000 miles now. Mechanic says it is torque converters. 2018 SLT
Bought a 2018 GMC loaded. Beautiful truck, Runs and rides like a dream. First thing off the bat, Vibration
Brand new truck Had to order a new driveshaft, had to hunt one down and they changed it. had so many things happen that are too much to list. Everything is covered up to 100000 miles with an extended warranty what concerns me now ( the dealer) has no one to fix it properly if something goes out. Should I trade it in on something else? I’m now at 56000 miles. This is the question. Thanks
Have a 2018 GMC Sierra SLT, had it it for 2 years now and drive it every day and everywhere – Never had a problem and truck is absolutely perfect – couldn’t be happier with the truck or with GMC Dealers and Service. Done recommended service only and not a single complaint… Love my GMC truck.
I have a 2018 GMC Sierra Denali pickup. (and another vehicle also, so neither one has a lot of miles on them). Bought the truck Aug. 2018, got a decent deal, over $11k off sticker, and it was equipped with the 6.2L V8, which I’ve been wanting again sometime in my life. Been MANY years since I’ve had a V8 equipped personal vehicle! I am retired, and at some point was probably going to give this truck to my son, after a few years of enjoying it, and it would still be low mileage for him. And I wanted the Denali if I could afford it, wanted the extras and the little bit of luxury it provides. I did SOME research, and knew that a few had had problems with the 8-speed tranny, but wasn’t overly concerned about it, figuring that it was the 4th year of them using them and any problems would have been ID’d and fixed by GM @ factory level by now! Guess I should have read MORE and done even MORE research! Unless the truck is warmed up (even in summer temps) the 1-2 shift will stop you in your tracks and almost feels like if you didn’t have your seat belt on you COULD hit the steering wheel! Once it’s warmed up it acts “normal” for the most part, at least that part of the tranny. It shifts like crap, never smooth, always a surge, or “bump”, or whatever it’s looking for! Very frustrating! 1st time back to the dealer they didn’t find anything. AND at that 1st visit they were supposed to do a free oil change and rotate the tires. When I got to the truck there is a huge sweat stain on the console, and white lithium grease sprayed on EVERY hinge, lock, etc. and overspray on the black weatherstripping, it’s on paint around the door jambs, it’s everywhere! NOT happy, but I need to go, will deal with this later. 2nd time the service manager was supposed to stop on his way to work and pick it up, so he could experience that hard 1-2 shift while it was cold. The agreed upon date came, and I’m waiting for him. And waiting. And waiting. NO phone call. NO email and no attempt to contact the customer that just paid over $50k for a “top of the line” truck at YOUR dealership! Thank you very much! I waited awhile, and when I felt like dealing with him I stopped to see him. He ends up driving me home, and telling me he’s noticing that the tranny doesn’t feel right, and taking the truck back so they can get on it 1st thing in the a.m., and somebody will deliver it back to me when they are finished. He calls me the next day, explains that they did a reset so it can “relearn” my habits. No fluid change was performed like he told me there would be. Says they rotated the tires, and when I go to leave a couple hours later I check to see what pressures they set them at. They didn’t even bother to do that, to check and adjust tire pressures after rotating them! And I STILL had white lithium grease everywhere! And NOW I’m having trouble with the MRC! (Magnetic Ride Control, that is included in the Denali pkg. And from what I’ve read is a very expensive repair when the struts and components usually fail by 50k miles. Awesome!) The main problem is the fact that it’s NOT working! Went thru 2 months of it last fall, and then it corrected itself, and has been decent, up until about a month ago, when you can just tell there is no suspension action happening! Feels like I’m on tires with 50-60 lbs of air, or more. EVERY little imperfection in the road comes thru as “bang, bang, bang” Exhausting!! And they claim it shows nothing wrong. All this on a truck with about 6,000 miles on it! Making those payments and insurance on something I don’t even want to drive! And I’m certainly NOT going to give it to my son like this! Thanks very much GM, you got my $$ once, and that’s the ONLY time you’re going to get it! Dealerships and hired help that don’t care, and most likely lack the knowledge (at least around here) to even fix it! Only been back to them ’cause I have a NEW VEHICLE WITH A WARRANTY! That they just laugh at! Have you guys heard about brand new C7 Vettes (Grand Sports and Z06’s) where the factory wheels are cracking!? There have been accidents due to them cracking. And GM will not help, no replacement, no nothing. Story of the woman who had saved up her $ thru the years and finally bought her DREAM car. That she doesn’t even want anymore! had it bookmarked- https://www.usatoday.com/story/money/cars/2020/10/10/gm-chevrolet-corvette-bad-wheels-class-action-lawsuit/5956388002/ A MAJOR car manufacturer that refuses to honor their warranties on parts that could be a safety hazard and cause bodily harm. Or worse. If that part, in this case, the wheels you are relying on to stay intact as you drive down the Interstate fails! They SHOULD be sued, and be made to recall all those wheels! (ever seen a car cartwheel and flip down the road? Exactly what can happen if one of these wheels fails @ speed!)
2018 GMC Sierra slt 4×4 has issues with hard shift between 1 and 2nd gear when taking off on a cold start
I have a 2018 1500 Denali with 4 issues.
1.Hard 1-2 shift when cold
2.Clunk when 3-2 or 2-1 downshift or sudden traffic stop I can feel and hear the clunk at times
3. Steering wheel hard when reversing (sometimes)
4. Turns off when I sit 30+ minutes and take off I’ve had the truck for 5mo currently has 57K miles stalled 4 times
Huge disappointment and inconvenience
2018 GMC 1500 with 6.2 engine.Been to the dealer 3 times (Thompson,in Springfield,Mo.) Transmission hard shift from 1-2. Have tolls them it needs to sit overnight or a least 8 hours.Seems to be getting worse
I have a 2018 GMC 4 wheel drive Transmission started to slip and not drivable took 2 weeks to get an appointment. When I called 2 different dealers they both said no service issues they knew of. But when I went o my appointment the service person knew right away. They changed the fluid and 2 weeks latter hard down shift again. Done with GMC gong to go buy a Ford hard lesson, don’t ever buy GM Products they don’t stand behind them.
i bought a 2018 gmc Sierra 1500 4wd elevation. i as well notice hard up and downshifts between 1st and 2nd gears. not to mention that now at 57000 kms my transfer case is leaking. im sure this will be covered under the warranty but as this is my very first brand new vehicle purchased makes me wonder what other issues will pop up outside of the warranty.
Bought 2018 GMC Sierra All Terrain.
Has hard shift, clunking, banging, wheels spin out on take off on dry surface. Dealer wont address an issue. Gas mileage has dropped to range from 18mpg to 9mpg driving in small town. They told me to reset the gas mileage trip meter every time I filled up????
Dealer has noted my actual complaint for service as bad gas mileage and did not make reference to primary shifting complaint I brought in for. Service manager noted on test drive he could not get truck to stay in or shift to V4 from V8 mode. They said I should not drive on auto for 4 wheel drive status. Suggested I should put in 2WD. I dont haul trailers or other equipment.
I have recorded dash video showing truck in and out of V8 while on cruise control on highway. Tach shows fluctuating rpm issues on cruise at same time. On cruise, should transfer to V 4 and result in higher mpg. That is not happening.
My dealer didnt even offer to flush transmission fluids as others have had done. Suggested I take to another dealer.
I did have former certified GMC specialist drive and he noted and acknowledged my listed concerns.
Please advise. I paid over 57K for this vehicle with extended warranties and was offered 33,600 on trade. Truck has 16K miles, excellent shape.
I bought a 2018 GMC Sierra Denali Utimate addition. This is GMCs TOP model costing 70k. As I have had others, The transmission on this truck has been in several times. It bucks, bangs, and hesitates all the time. All known as operating normally per GM.. A bulliton is out now and they said a fluid flush should fix it. Other issue are front strutes found they were leaking, rear end leaking, front leather on seats replaced.. At just a year old the truck is falling apart. Funny thing is I dont tow anything, the truck doesnt have a nick on it and is in a temperature controlled garage.. This is my weekend family mobile, and has now turned into a huge risk in driving my children around. Any help is appreciated