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My Investigation into the 2024 GMC Terrain Problems: What Owners Need to Know
Problem analysis of the 2024 GMC Terrain found issues including transmission failure, engine power loss, infotainment glitches, speaker malfunctions, and water leaks.
Key Points
- Our team analyzed real consumer complaints, NHTSA data, owner feedback, and internal data to identify commonly reported problems with the 2024 GMC Terrain.
- Owners most often report transmission failure, sudden power loss, infotainment malfunctions, fuel pump and engine-related failures, and electrical or warning system errors.
- Owners with repeated or unresolved defects may have rights under state lemon laws, including a possible refund, replacement, or compensation.
A transmission failing at 3,800 miles. That is not a worn-out vehicle with high mileage. That is a brand-new car with a serious problem, and it is exactly the kind of complaint that sent me digging into the data on the 2024 GMC Terrain.
My name is Sergei Lemberg, and I’m a lemon law attorney with over twenty years of experience representing consumers in vehicle defect cases.
As part of our ongoing series on year-specific car problems, I reviewed NHTSA complaints, owner feedback, and our own internal data for the 2024 GMC Terrain. As always, not all Terrains will experience these issues. These are simply the most commonly reported defects, likely affecting a small percentage of vehicles.
Let’s dive in.
Most Common Problems with the 2024 GMC Terrain
Several data sources reveal recurring issues reported by 2024 GMC Terrain owners. Based on complaint frequency and severity, the primary problems include:
- Transmission Failure and Power Loss: Sudden loss of engine power or transmission shifting to park while driving, causing dangerous situations and tow truck calls.
- Infotainment System Malfunctions: Black screens, rear camera activation problems, unresponsive controls, and volume issues affecting driver safety and convenience.
- Fuel Pump Failure: Water accumulating on the driver’s side floor from clogged drain lines causing damage to electronics and potential mold growth.
- Additional Electrical and Warning System Errors: Persistent ABS, blind spot assist errors, seatbelt warning beeps, and steering wheel lockups creating safety concerns.
2024 GMC Terrain Complaint Summary
| Complaint Category | Number of Complaints |
|---|---|
| Power Train | |
| Engine | |
| Fuel/propulsion System | |
| Unknown Or Other | |
| Electrical System | |
| Vehicle Speed Control | |
| Air Bags | |
| Forward Collision Avoidance: Automatic Emergency Braking | |
| Service Brakes | |
| Firerelated |
Top Problem #1: Transmission Failure
Transmission and engine power issues are the most severe and frequently reported defects in the 2024 GMC Terrain. Owners describe sudden, unexpected loss of power at highway speeds, which poses significant safety risks.
Symptoms include:
- Vehicle shifting into park while moving
- Complete loss of acceleration on highways
- Engine stalling and reduced power warnings
- Difficulty shifting gears or gear indicator blinking
- Transmission repairs often requiring weeks due to part backorders
Owner quotes highlight the danger
“While driving down the road at 70 miles an hour, the car lost power. I narrowly avoided an accident. The dealer said that it’s a massive transmission job that would take weeks.”
“The transmission completely failed at just 3800 miles. I was stranded multiple times and felt unsafe driving this vehicle.”
Top Problem #2: Infotainment System Malfunctions
The infotainment system on the 2024 GMC Terrain, however, has drawn many complaints for erratic behavior that causes distraction or limits driver control.
Symptoms include:
- Rearview camera that stays on continuously or activates unexpectedly
- Screen flickering or going blank
- Volume controls stuck at high levels or unresponsive
- Steering wheel control buttons not working
- Repeated error codes logged (e.g., PIC6591A)
Owner quotes showcases this issue
“When placing the car in drive, the rear camera never shuts off. Meanwhile, the sound volume doesn’t work. As a result, the entire infotainment system completely malfunctions. The dealership knows about the issue but offers no permanent fix.”
“My system crashes multiple times a week, leaving me with no audio or controls while driving.”
Top Problem #3: Fuel Pump Failures
While transmission failure is the most commonly reported cause of sudden power loss in the 2024 GMC Terrain, some owners are experiencing a separate but equally frustrating pattern: repeated engine failures that cycle through part after part without a permanent fix.
Symptoms include:
- Sudden engine power loss and complete vehicle shutdown while driving at highway speeds
- Battery failure with no retrievable diagnostic codes
- Check engine light returning shortly after each repair
- Multiple replacement parts including batteries, catalytic converters, oxygen sensors, fuel pumps, and fuel lines failing to resolve the root cause
- Vehicle cycling in and out of the dealership repeatedly over a period of months
One owner described their experience
“I lost power on I-94 and my car died. The dealership couldn’t get a code. After getting it back, the engine light came on again. They replaced the battery, then the catalytic converter and oxygen sensor, then the fuel pump and fuel line. After driving 300 miles the engine light came back on. They replaced the catalytic converter and oxygen sensor a second time, all within a few months.”
Top Problem #4: Additional Electrical and Warning System Errors
Many owners also face smaller but impactful electrical problems and safety warnings. These include:
- Persistent ABS and blind spot assist error messages that dealers cannot reproduce
- Unexpected beeping even with seatbelts fastened
- Steering wheel lockups causing loss of maneuverability
- Brake system failures with long stopping distances and warning lights appearing suddenly
What Should You Do If Your 2024 GMC Terrain Is a Lemon?
I want to make it clear what defines a lemon vehicle under state lemon laws. A lemon is a new vehicle with a substantial defect covered by warranty that the manufacturer or dealer cannot fix within a reasonable number of attempts or days out of service. So, if your 2024 GMC Terrain experiences repeated failures like those described here, you may qualify for legal relief.
To start, I recommend documenting every repair visit, symptoms, communications, and dates thoroughly. Because this evidence is crucial, it can help build your case. Next, consider filing complaints with the manufacturer and government agencies like the National Highway Traffic Safety Administration so there is an official record.
Lemberg Law offers a free lemon law consultation to help you understand your rights and eligibility. We do not get paid unless we win, and statutory fee shifting means most clients pay nothing out of pocket. Time limits apply, so I encourage you to contact Lemberg Law today before your claim expires. We stand ready to fight for your compensation or vehicle replacement.
Lemberg Law today before your claim expires. We stand ready to fight for your compensation or vehicle replacement.
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About the Author:
Sergei Lemberg is an attorney focusing on consumer law, class actions related to automotive issues, and personal injury litigation. With nearly two decades of experience, his areas of practice include Lemon Law (vehicle defects), Debt Collection Harassment, TCPA (illegal robocalls and texts), Fair Credit Reporting Act, Overtime claims, Personal Injury cases, and Class Actions. He has consistently been recognized as the nation's "most active consumer attorney." In 2020, Mr. Lemberg represented Noah Duguid before the United States Supreme Court in the landmark case Duguid v. Facebook. He is also the author of "Defanging Debt Collectors," a guide that empowers consumers to fight back against debt collectors and prevail, as well as "Lemon Law 101: The Laws That Lemon Dealers Don't Want You to Know."
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