GMC Terrain Complaints

3,167 consumer complaints on file.

#11670483July 1, 2025
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
Driving my vehicle with no warnings, messages, or symptoms on adaptive cruise control Sunday [XXX] on [XXX] in Michigan. I changed lanes into the right lane when the vehicle abruptly, without notification, and with force, caused braking that unexpectedly and dangerously slowed the vehicle then released braking before doing the same a moment later. Vehicle was pulled off the road onto the shoulder without an accident, thankfully nobody was behind because they would not have been able to stop in time before hitting my vehicle and I assume the brake lights weren't activated since I did not press the brake pedal either time the vehicle was abruptly slowed causing audible noise of traction loss due to skidding. Vehicle engine would function but parking brake remained active leaving vehicle unable to change gears and transmission warning showed on instrument panel. Vehicle towed to a Chevrolet dealer in Grayling, Michigan where it remains and would be available for inspection. Dealer shows transmission as the cause and in need of replacement. Vehicle has been maintained at GM shops since original ownership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11670353June 30, 2025
FUEL SYSTEM, GASOLINE, ENGINE
The contact owns a 2020 GMC Terrain. The contact stated while driving at an undisclosed speed, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed that the fuel pump control module had failed and needed to be replaced. The vehicle was not repaired. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 88,000. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669754June 27, 2025
UNKNOWN OR OTHER
Sunshade is not rolling back and has come off the tracks obstructing rear view and I am unable to drive the vehicle
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669797June 27, 2025
ENGINE
The contact owns a 2011 GMC Terrain. The contact stated while driving 25 MPH and depressing the accelerator pedal, the vehicle failed to respond as intended. The contact pulled over to the right side of the roadway and waited for towing assistance. The contact stated that an independent mechanic was contacted. The vehicle was towed to an independent mechanic and two separate auto body shops, where it was diagnosed and determined that the engine was consuming engine oil, and the engine needed to be replaced. The contact stated that the second time the vehicle was driven to the independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 114,114.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669512June 26, 2025
ENGINE, ELECTRONIC STABILITY CONTROL (ESC), TRACTION CONTROL SYSTEM
The contact owns a 2020 GMC Terrain. The contact stated that the vehicle was taken to a dealer for an oil change. The contact stated that approximately 5 weeks after returning the oil change, while driving at approximately 65 MPH, the vehicle and steering wheel started shaking abnormally and the vehicle lost motive power. The contact stated that the traction control, check engine, and stabili-trak control warning lights were illuminated. The vehicle was taken to a dealer where it was diagnosed that there was no oil in the engine and the spark plugs and ignition coils needed to be replaced. The vehicle was repaired; however, the failure reoccurred three weeks later. The manufacturer was not notified of the failure. The failure mileage was approximately 37,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669590June 26, 2025
ENGINE, POWER TRAIN, VEHICLE SPEED CONTROL
On 6/22/2025, brakes stopped working while trying to make a turn. Next multiple engines light came and car went into reduced speed mode. As I tried to find a safe place to stop, the vehicle went into limp mode and shut down in the middle of the road. The dealership said the issue was the vacuum pump which caused the timing chains to break. There have multiple recalls for this exact issue but my car is not on the list. My manufacture warranty ended on 5/21/2025. When I spoke to a GM representative I was told there was nothing they can do because there is not a recall for my vehicle. They explained even though I had the same problem the recall is for other vehicles. GM also issued a warranty extention on the vacuum pump to 10 years 150,000 miles. However my vehicle is not on the list for the extention. this issue is a safety hazard regardless of the vehicle type. I was lucky that no one was behind me or they would have hit me.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669569June 26, 2025
FUEL SYSTEM, GASOLINE, ENGINE AND ENGINE COOLING, ENGINE
The contact owns a 2023 GMC Terrain. The contact stated while driving 15 MPH, the message "Engine Power Reduced” was displayed on the instrument panel. The contact stated that the vehicle the lost motive power in the middle of the roadway. The check engine warning light was illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the high-pressure fuel pump, causing fuel to leak into the oil, resulting in damages to the catalytic converter and Oxygen sensor. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 41,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669047June 24, 2025
VISIBILITY/WIPER
I was driving on an interstate highway. I entered a construction zone restricted to two lanes.(one each way). It began to rain very hard, after a short time of starting the front windshield wipers; both stopped. There was a total failure of both wipers with out any warning and a total loss of vision due to a rain covered windshield. Due to the restricted traffic lanes in the interstate construction zone there was no shoulder on either side to pull off onto and no way to exit the interstate traffic flow for several miles. I was able to avoid a crash and exit the interstate after several miles. With a different driver, slightly different circumstances or a little less luck it would have resulted in LOSS of LIFE!!!! The cause was failure of the wiper arm linkage more specifically the ball broke off of the wiper motor arm. THIS APPEARS TO BE THE SAME FAILURE THAT CAUSED A RECALL TO BE ISSUED FOR PREVIOUS MODEL YEARS OF THE GMC TERAIN. The parts are available for inspection.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11668272June 21, 2025
UNKNOWN OR OTHER
Liftgate strut malfunctioned. Yes vehicle is available for inspection upon request. I activated the trunk with the key fob, while retrieving items out of my trunk, the trunk began closing on me without any warning. The liftgate sensor failed to recognize an object (ME), was in the trunk and nearly caused a severe crush injury which could have been fatal. Yes the problem was reproduce by an independent service center as well as a dealership. No the part was not inspected. There were no known warning lights or messages. Apparently as per consumers this is known problem with the 2010-2017 GMC Terrain and Chevy Equinox.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667967June 19, 2025
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
Throttle position system all of a sudden went bad. My 2017 Terrain started shaking. I was holding up traffic. The sun couldn't go over 5mph. I've read online where this is happening alot in 2010'2017 GMC Terrains.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667911June 19, 2025
UNKNOWN OR OTHER
infotainment system safety issues. I have video. Multiple times per week when starting the car and backing the rear camera engages. When placing car in drive the rear camera never shuts off, the sound volume doesn't work, the entire infotainment system completely malfunctions. The safety is when attempting to function the controls the volume will turn up and not able to turn it down, the screen flashes and the infotainment systems controls on the steering wheel do NOT function. I've had it to the dealer and they indicate PIC6591A from March 3rd 2025 is logged. When contacting GMC corporate they refuse to give any information. The PIC spans across many GMC vehicles including 2019 models. Why hasn't this been addressed? My son drives a 2024 Chevy Trax and this car has no issues like the my car does. His car also doesn't have the transmission/gear shift buttons like the 2024 terrain does. Anyone else having issues with the GMC infotainment systems, black screen, malfunction? I have video.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667769June 18, 2025
ENGINE
While my wife was driving on [XXX] speed (60 –70 mph), the engine suddenly seized without warning. This created a dangerous situation, especially at that speed. Upon inspection, it was confirmed that a camshaft end cap detached, causing catastrophic internal engine damage. I believe this may be due to a manufacturing defect or insufficient part durability, and poses a serious safety risk to myself and other drivers. Please investigate this issue for broader safety concerns and potential recalls, especially if other owners report similar failures. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667521June 17, 2025
ENGINE, SERVICE BRAKES
My car started experiencing a strange problem while braking on June 15. I released the parking brake leaving my parents driveway. I coasted backwards (as usual), and when I pressed the brake the car didn't stop as expected and the brake pedal was very hard to press. It eventually stopped. I put into park, then put the emergency brake on, then released all and tried again and encountered the same issue, that it was very very slow to stop and the brake pedal was hard to push in. I got home, parked the car - tested the reverse brake on flat surface and didn't notice the issue. The next day, the problem started happening with the front brake as well and an error code popped up that said 'check brake assist' which I've never seen before. I brought it to my local mechanic, who took a look and said that it's a vacuum pump failure, and the result is a lot of metal shards were released into the engine when the vacuum pump failed. My mechanic recommended I take to a GMC dealer for further evaluation. I looked up the recall on this issue, and see that it impacts a lot cars, including the 2017 GMC terrain, but not my 2018 GMC terrain. I am going to take it to the GMC dealer but I'm afraid I won't be able to afford the repair, and it doesn't seem like there was anything I could have done to prevent this from happening.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667181June 16, 2025
ENGINE, FUEL/PROPULSION SYSTEM
Vehicle felt like it was running out of gas and then stalled out while driving down the road. It will not turn over and it will not move out of park. This is a huge safety issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667078June 16, 2025
UNKNOWN OR OTHER
Driving 75-80mph in the freeway when suddenly the power stopped in the middle of the road and couldn’t get it to run. Thankfully freeway exit was near was able to get the vehicle to safety. Tried to turn in on again and would turn on but die down after. Had to tow the vehicle and take it to the dealership the next day. Said it was fuel pump module defect and there’s nothing I could have done to cause it. Vehicle is less than 3 years old with good maintenance
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666948June 14, 2025
VISIBILITY/WIPER
Windshield wipers stopped working during a downpour. Lucky I was able to make it home safely but took time. Checked fuses, nothing wrong there. Can hear something running so assume motor is OK, but linkage may have broken. Will have to take to mechanic
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666535June 12, 2025
SERVICE BRAKES
I got off a highway exit ramp and with no warning my brakes were hard to press. There was no warning lights on my dash. The brakes take a lot of force to push for a stop. The warning light finally came on a day later with codes p0556 and u040171.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666004June 10, 2025
ENGINE
The contact owns a 2019 GMC Terrain. The contact stated while driving 25 MPH, there was an abnormal sound coming from the engine. The low power message was displayed. The contact pulled over to the left side of the road and waited for towing assistance. The contact attempted to restart the vehicle; however, the vehicle failed to respond as intended. An independent mechanic was contacted. The vehicle was towed to an independent where it was diagnosed that timing chain, timing gears, the vacuum pump, cam phasers, and sensors all needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The contact was referred by the manufacturer and was informed to contact NHTSA to report the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666099June 10, 2025
ELECTRICAL SYSTEM
Back up camera service notice.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665797June 9, 2025
SERVICE BRAKES, HYDRAULIC
The contact's wife owns a 2019 GMC Terrain. The contact stated while driving 70 MPH and depressing the brake pedal, the brake pedal was firm, and the vehicle failed to respond as needed. The check engine warning light was illuminated. The contact stated that upon depressing the brake pedal with excessive force, the vehicle responded as needed. The contact stated upon inspecting underneath the brake booster, the contact noticed a lot of debris due to lack of vacuum pressure. The dealer and the manufacturer were notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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