GMC Terrain Complaints (2024)

54 consumer complaints on file.

#11723520March 11, 2026
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
I WAS DRIVING THE CAR ON 12-22-25 I LOST POWER MY CAR DIED ON I94. BATTERY DIED THE DEARLSHIP COULDNT GET THE CODE. GOT THE CAR BACK ON 12-26-25. ENGINE LIGHT CAME ON CARRIE GMC REPLACED BATTERY . CAR BACK ON 12-29-25.. ENGINE LIGHT BACK ON 12-31-25 CAR BACK ON 1-8-26 REPLACLED CATALYTIC CONVEERTED AND OXY SENSOR. 2-20-26 DRIVING ON 1-94 LOST ENGINE POWER CAR BACK ON 2-25 FEUL PUMP AND FEUL LINE. DROVE 300 MILES ENGINE LIGHT BACK ON. BACK TO CURRIE GMC ON 2-26-26 UNTILL 3-2-26 REPLACRED HEATED OXYGEN SENSOR . 3-6-26 REPLACED CATELYTIC CONVERTER AND OXYGER SENSOR FOR THE SECOND TIME.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723116March 9, 2026
ENGINE, FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
While driving several times smelt gas and car cut out engine came on and car stopped mid driving multiple times. Says they replaced fuel pump reset car etc
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722117March 4, 2026
POWER TRAIN
I bought my car in July of 2025 and since then my car keeps derating and reducing engine power while driving down the road at 70 miles an hour. It cuts out and decreases power. I took my car to the shop twice to have them tell it needed an update. I drove away and then the car does it again. Since December my car has down this decreased power, derated notice more than 30 times!! It is a safety risk for me and my family because you never know when it will happen on the interstate and when you will lose power. I have almost been rearended 3 times due to this issue and no one can seem to fix the issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722070March 4, 2026
FUEL/PROPULSION SYSTEM, ENGINE
Check engine light is coming on, indicating reduced engine power. Took vehicle to GMC dealer and they advised that the repair shop was getting assistance from the GMC Tech line to update a module to correct the issues. I was informed today that the high pressure fuel pump will have to be replaced, along with a hose or pipe to correct the issue. The vehicle has 57k miles on it. Upon researching the issue, I found that this has been a persistent issue with this model vehicle, dating back to 2020. It appears that it has not been resolved and the vehicles could stall or stop at any time. There is currently a class action lawsuit pending on this issue. Please help, this is dangerous
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720325February 25, 2026
FUEL/PROPULSION SYSTEM, ENGINE
On Febuary 14 2026 I was driving on the feeder of the freeway with speeds of 50 mph my car suddenly down shifted in the middle of driving started shaking real bad stalled wouldn’t start wouldn’t go in gear at all would just die and say engine power reduced. This is after it had just been at the dealership and they said all I needed was an update. It had to be towed and the dealership said it was my high pressure fuel pump had failed. They replaced it and gave me the car back. I staled the next morning going to work on the freeway going 70 mph same exact thing happened except this time I could smell gas so strongly. I had to sit on the side of the highway until it was picked up due to gas smell and fear of fire. They say a bolt broke off of the high pressure fuel pump they just installed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714938February 2, 2026
POWER TRAIN
Transmission dropped complete out of gear while driving. Got vehicle moving again. Took to dealership. Found complete internal transmission failure at 6779 miles. Transmission replaced with new unit. New transmission has erratic / hard shifts. Found replacement transmission leaking fluid due to front pump / porous case at 14800 miles. Customer Satisfaction Program N232433890 issued May 16, 2024
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11711615January 17, 2026
POWER TRAIN
Powertrain System failure while driving, causing complete loss of power on road. The car lacks any accessible manual overrides to put in neutral or turn off parking break. This leaves the car stuck in park with all four wheels locked in the middle of the road in an incident with no safe way to move or tow the vehicle. When attempting to tow car must be dragged, and parking brake continuously engages. Tow attempt took nearly 3 hours to saddle the vehicle in the roadway. Vehicle currently awaiting formal inspection/repair from dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11687798September 17, 2025
POWER TRAIN, ENGINE
The contact owns a 2024 GMC Terrain. The contact stated that while his wife was driving at various speeds, the vehicle experienced a loss of automotive power. The check engine and transmission warning lights were illuminated. In addition, the contact's wife attempted to restart the vehicle; however, the gear shifter failed to move from neutral(N) and remained in Low Power Mode. The vehicle was towed to a local dealer, where it was diagnosed, and DTC: P0700 and P073E were retrieved. In addition, the contact related the failure to Technical Service Bulletin: PIP5974E; however, the VIN was not included. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 6,766.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11686436September 10, 2025
UNKNOWN OR OTHER
The rear camera is displaying the top of the license plate! It wasn’t doing it when I first purchased the car. Dealer states it is normal. I do not agree.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11681275August 18, 2025
FUEL/PROPULSION SYSTEM
FUEL PUMP WENT OUT AT 42K MILES.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11681027August 16, 2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: WARNINGS
My wife and I took our new vehicle on a 7k mile road trip this summer. Two times while on the freeway around 70 MPH, the sensors went wild. The cars auto break came on and red lights and collision warnings went off in the seat and the HUD. The vehicle slowed down to about 35 immediately! Then everything turned off and we sped back went down the road like nothing happened. Luckily there was no behind us or in front of us for a good distance. The thing is during both of the there was a car in the lane next to us at our 1 or 2 o'clock position. Perhaps the sensors. Mistakingly thought we were about to hit that car. Can these seniors be adjusted?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11680854August 15, 2025
POWER TRAIN
I purchased a new 2024 GMC Terrain in March 2024. At the time of the incident the mileage was approximately 18,000 miles. On [XXX], as I was driving on a MA state highway, the car lost power with no warning. I was able to "coast" into a parking lot where I contacted OnStar; a flatbed tow truck was dispatched and the car was towed to the local dealership where it was purchased. At this time, the car is still at the dealer as I was informed by dealer service consultant that it's a "massive" transmission job and parts were on back order from GMC for over three weeks. I specifically purchased this vehicle to be safe on my monthly trips to NY to visit grandchild. I no longer feel safe in this vehicle and have no guarantee this won't happen again. The fact that the transmission failed in 1 yr. old car at 18,000 miles is of great concern to me. 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
#11679365August 8, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
a little over two weeks ago we were going to sidney to get groceries. it was hot that day so we turned the a/c on. fog started coming out of the vents, it looked like we turned on a fog machine! a few days later we were going to town, my daughter got in and the whole driver's side floor was full of water. there was so much of it we had to get the shop vac out to suck it up. I called the dealer where we purchased it from because it still under warranty. their shop guy was out for the week so they scheduled me an appt for the following week. by this time my speakers aren't working, my signal lights dont make any sounds when I use them and the floor is soaked again. on August 5th we took the car into high plains and left it. they said they worked on it for 4 hours and fixed the problem, some drain line was plugged with sludge and so the water knocked out a module or amp. I thot everything would be covered but then they said I'd have to pay because all of a sudden a mouse had causes that line to get plugged. I asked them for pictures because im turning it into my insurance company, and they said they would send them. they never have I requested the pictures 2x, once with Patrick the shop manager and then with Jeff presser, owner. Still today, nothing. Meanwhile yesterday here comes all the water on the floor again. We use this vehicle to haul my grandson to his therapies and medical appointments. he [XXX]. Now were worried that mold has started growing because even though were sucking up the water, the floor pad and carpet are still wet. I went online and have seen numerous people complaining about the same issue for years with these GMC Terrains, why hasnt there been a recall or national warning on this faulty problem? 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
#11678671August 6, 2025
UNKNOWN OR OTHER
Vehicle shimmies upon acceleration from a stopped position.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678014August 2, 2025
FUEL/PROPULSION SYSTEM
car quit while driving could not control stopped across 2 lanes of highway almost was hit by big truck. Car would not start or go into neutral. When car almost started i put it into neutral and was pushed off of highway. dealer towed car and replaced fuel module at 25423 miles.
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
#11663931May 30, 2025
AIR BAGS
The contact owns a 2024 GMC Terrain. The contact stated that while driving at an undisclosed speed, the "Service Vehicle Soon" message was displayed, and the air bag warning light was intermittently illuminated. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 10,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662023May 20, 2025
POWER TRAIN, VEHICLE SPEED CONTROL
Unintended acceleration in forward and reverse: the vehicle experiences unintended acceleration both in forward and reverse. While driving in heavy traffic, the vehicle continues to maintain throttle position for approximately two seconds after releasing the throttle, creating a dangerous situation where the vehicle continues to accelerate towards other cars. This defect requires emergency braking to prevent a collision. In reverse , the vehicle also holds throttle position after the accelerator is released. This results in the vehicle unintentionally accelerating in reverse at a rapid pace. This requires the driver to depress the brake moderately to control the reverse speed. During this event the driver is fighting against the motor with the brake pedal until the vehicle decided to stop accelerating on its own.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11660727May 13, 2025
ENGINE, SERVICE BRAKES, HYDRAULIC
The contact owns a 2024 GMC Terrain. The contact stated that while driving at various speeds, the vehicle was hesitating while accelerating. The contact stated that the vehicle was stalling, and the brake pedal was spongy. The vehicle was taken to the local dealer on several occasions, but the failure was not duplicated. The vehicle was not repaired. The contact stated that the failure persisted. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 10.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658371May 2, 2025
ENGINE, FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL
Driving on slightly uphill 55 mph highway, vehicle started jumping & losing engine power. Engine light came on, I made it to the top as it was slowing down. Pulled off to the side. Put it in park for a minute. Message showing on dash read - acceleration power reduced. Drove it on home (engine light stayed on) parked it & had it towed to dealership the next morning. Got a call from dealership the same afternoon saying the vehicle was ready to be picked up. Picked up later in evening from dealership. They left keys & paper in car for pick up. We still tend the paper left it in the box showing we picked it up. The vehicle drove good back home. Drove it the next day, As I was pulling out from a stop sign, it started jumping again for a few seconds. Got home & had my husband to drive it, as we were coming up a small hill, it started jumping & losing power again engine light was blinking at this point. Dash board read engine power reduced. My husband kept on the accelerater & when we got on top of the hill engine light went off & we drove it back to the dealership & left it to be checked again. They kept the vehicle for 7 days & said they were not able to find concern. We picked it up again. Drove it back home without any incident. It has been parked since we got it home.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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