Families that wanted to tow and have maximum seating capacity, purchased the 2017 GMC Yukon assuming it would fit their needs. Immediately, they took to planning out fun road trips and drives to the beach. What they ended up with were problems that were never expected. This full-size SUV regularly receives complaints regarding faulty brakes, a malfunctioning brake light assembly and defective injectors. With this in mind, it can still be described as the perfect family car, if you don’t mind spending all your time getting repairs.
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The brakes are one of the most vital safety components on a vehicle. The system must work properly to keep drivers from getting into an accident. Unfortunately, many GMC Yukon owners find that the brakes don’t work the way they should. This puts the family at risk and has led to accidents.
Just read what this reviewer said on the NHTSA website. “Low speed brake failure. In my driveway, in parking lots, usually after having foot on brake to ‘roll’ and then stop again, no brakes, or have to put two feet down to stop. I hit a car in front of me two days ago after waiting at a red light, starting to roll because they rolled, then they stopped, and I hit the brake and nothing happened. My husband has taken the car multiple times to be looked at for the brakes not working for at least 6 months.”
What a scary situation these owners find themselves in; constantly wondering if they will be able to stop or not. Service Bulletin #PIT5361D addresses the concern directly. In this communication, GM discusses hard brake pedals, increased effort required to brake and a ticking noise that is sometimes present. To properly repair the problem, technicians need to replace the vacuum pump, vacuum line, brake booster and the master cylinder. Why there wasn’t a safety recall issued considering all the complaints, we don’t understand. Maybe the automaker feels that stopping with your family in the SUV isn’t important. Let’s hope you have a heavy foot if you plan to drive this SUV.
Here are some actual complaints logged with the NHTSA about the 2017 GMC Yukon Brake Problems
WHEN DRIVING OCCASIONALLY YOU HAVE TO PUSH REALLY HARD ON THE BRAKES TO STOP. 9/10 TIMES BRAKES WORK NORMAL BUT ONCE IN A WHILE YOU HAVE TO PRESS VERY HARD TO STOP. WAS PULLING INTO MY DRIVEWAY AT A VERY LOW SPEED BRAKES WERE HARD TO PRESS AND RAN INTO THE WALL OF THE GARAGE. BROUGHT TO THE DEALER NUMEROUS TIMES SINCE I BOUGHT IT BRAND NEW AND STILL NOT FIXED.
HAVE NO BRAKES AT LOW SPEED DUE TO FAULTY VACUUM PUMP
MY HUSBAND AND I WERE DRIVING ON THE HIGHWAY AT 70 MPH WHEN HE NEEDED TO SLOW DOWN AND NOTICED THE BRAKES ON THE YUKON WERE NOT FUNCTIONING PROPERLY. MORE SPECIFICALLY, THE BRAKES WOULD NOT FUNCTION THE FIRST 3-4 TIMES WHEN THEY WERE APPLIED OR TAPPED, BUT THEREAFTER THE BRAKES WOULD BECOME HARD AND HE HAD TO DEPRESS THE BRAKE PEDAL AS HARD AS HE COULD BUT WITH LITTLE TO NO STOPPING ABILITY. THE BRAKE ASSIST LIGHT CAME ON. HAD WE BEEN IN ANY TRAFFIC OR ON A SHORTER ROAD, WE WOULD HAVE SURELY CRASHED INTO SOMEONE AND IT COULD HAVE BEEN CATASTROPHIC CONSIDERING WE LIVE IN DALLAS WHERE THERE IS A LOT OF TRAFFIC. THIS DAY WE WERE VERY LUCKY!
When the brakes are working, you can’t rely on the brake lights to function. Many drivers find themselves pulled over on the side of the road because their exterior lighting fails.
One owner wrote on the NHTSA website, “We were pulled over. We were informed that our passenger side brake light was non-operational. After inspection it was found that turn signal and hazard lights worked but not brake. A repair order was issued. We took it to the GMC dealership and was told the whole tail/brake light housing, wire and potentially the fuse needed replaced and that it would cost $700. We were also told by the dealership that they have had several GMC Yukon owners come in with the same issue and that it was a part malfunction that may or may not be covered by our warranty.”
It’s clear that GM understands there’s a problem. They issued Service Bulletin #02-08-42-001I, but it doesn’t talk about fixing the situation. Instead, it’s a correspondence directed at the service techs to determine if the malfunctioning brake light assembly should be covered by warranty. See, the automaker is more concerned with whether or not they should cover their defective part then they are about on-road safety. I guess they figure drivers won’t care when they receive a hefty fine for driving without appropriate lighting.
Here are some actual complaints logged with the NHTSA about the 2017 GMC Yukon Lighting Problems
2017 YUKON DENALI (ONLY BEEN IN USE FOR 19 MONTHS) DS BRAKELIGHT ASSEMBLY (RED LED OUTTER RING) STOPPED WORKING.
THE REAR PASSENGER LIGHT ASSEMBLY HAS FAILED. NO LIGHTS WITHIN THE HOUSING ARE CURRENTLY WORKING. THE UNSAFE CONDITION EXISTS WHEN THE VEHICLE IS IN MOTION, AS IT HAS NO RUNNING LIGHTS, BRAKE LIGHTS OR TURN SIGNALS. THIS APPEARS TO BE A VERY COMMON PROBLEM FOR YUKON’S OF THIS YEAR, WHICH ARE STILL FAIRLY NEW.
PULLED OVER BY POLICE FOR MALFUNCTIONING LHR BRAKE LIGHT. ENTIRE REAR LAMP ASSEMBLY MUST BE REPLACED SINCE IT IS AN INTEGRATED CIRCUIT BOARD WITH LED LAMPS. $700 PLUS INSTALLATION. SEVERAL VICTIMS ON-LINE DISCUSSION FORUMS.
Fuel / Propulsion System
The fuel system is a vital aspect of the drivability of a vehicle. With the 2017 Yukon, many owners report trouble with the engine and fuel injectors. Not only can faulty injectors cause a rough ride, but it often leads to fear, wondering if the car is going to break down on the side of the road.
One person took to Edmunds to say, “I too like the other reviewer here had purchased a 2017 Yukon Denali. With the same problems of engine noise and miss fire. After complaining to the dealer several times with their excuse that …’ It’s just the nature of the car it’s a big engine’ and after 2 rebuilds on the engine they finally replaced the engine. Although it still sounds a bit off.”
In this situation, it sounds like after two rebuilds they still weren’t willing to acknowledge there was something wrong. In Service Bulletin #18-NA-137, GM discusses the need for new fuel injectors when a customer complains of fuel odor or extended cranking. There are pages of other fuel system bulletins dealing with multiple other issues, so it’s fair to say that the automaker knows there are major complications. Still, as with many manufacturers, they try to remain as silent as they can regarding the problems in hopes you don’t notice when the car doesn’t drive right.
Here are some actual complaints logged with the NHTSA about the 2017 GMC Yukon Fuel System Problems
I HAVE 47,078 MILES ON THIS VEHICLE. IT CURRENTLY HAS A RANDOM MISFIRE THAT IS BEING BLAMED ON BAD FUEL INJECTORS. TO REPLACE ALL OF MY FUEL INJECTORS WILL COST ME APPROXIMATELY $1783.00 AT MY LOCAL DEALERSHIP AS MY VEHICLE IS 10,000 MILES OVER WARRANTY. I SHOULDN’T HAVE TO BE REPLACING FUEL INJECTORS ON A 1 YEAR OLD VEHICLE. IT RUNS ON LIMITED POWER MODE WHEN I START IT. I HAVE TO START IT AND THEN SHUT IT OFF AGAIN FOR IT TO RUN IN NORMAL OPERATION BUT IT STILL SHOWS A MISFIRE CODE.
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