GMC Terrain Complaints

3,167 consumer complaints on file.

#11700718November 21, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER, ENGINE
My a/c went out within 2 years of having the car in 22’. In 2025 i have had nothing but problems, the radio will go out when im driving for about 2 hours and it resets, the screen goes black, music stops, navigation stops and then it turns on like nothing happened. It happens everytime I drive 2+ hours. Back in September of 2025, I was on my way to work when I was stopped at a red light, it turned green and then my brakes locked up and I couldn’t drive my car had shut off, and wouldn’t come back on. I was stuck in the middle of the road not knowing what happened as the car had driven fine up until i stopped at the red light. Then tonight November 21,2025 around 0315 I was leaving work, I started my car, my car threw up a message that said “Low fuel, 0 miles” I had half a tank of gas when I got to work. I turned my car off then back again and it did the same thing. I let my car sit for a second and then my Gas gauge started to slowly increase to the correct amount of gas. Then when I got home (3 mile drive from work) I turned my car off and then back on and this time when I turned the car on my brakes were locked and I couldn’t start my car. All of the Engine lights were on so I turned the car off and then let it sit for a minute before trying to start it. When I tried to start it this time, I couldn’t. It’s like the car had died and was getting no power. I couldn’t lock my car, no lights were working, I couldn’t turn it on or start it. Some time went by and my interior lights were on so then I started the car and it’s almost like my car reset. I can’t see my tires PSI, the clock went to midnight (it was about 0330) it was all just very weird!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700844November 21, 2025
SERVICE BRAKES, HYDRAULIC
The contact owns a 2018 GMC Terrain. The contact stated that while driving at an undisclosed speed, the vehicle shuddered and failed to come to a stop while the brake pedal was depressed. The check engine warning light was illuminated. The vehicle was taken to a local independent mechanic, where it was diagnosed with a locked brake vacuum pump. The contact was informed that parts of the brake vacuum pump had entered inside the camshaft and valve cover. Several unknown local dealers were contacted. The vehicle was not diagnosed or repaired because there was no recall associated with the VIN. The manufacturer was made aware of the failure. The failure mileage was approximately 183,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700247November 19, 2025
UNKNOWN OR OTHER
An AC clutch/compressor malfunction. No cold air, unusual noises (grinding, squealing, rattling), metal shavings, burning rubber smell, engine stalling. No warning lamps or messages ever appeared. The problem was serviced at independent service center. The nearest GM dealer is more than 40 miles away from me. Did not drive vehicle and seeked professional help immediately.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699710November 16, 2025
ELECTRICAL SYSTEM, POWER TRAIN, ENGINE
1. The engine suddenly lost power while driving during evening rush hour and the vehicle would no longer accelerate. 2. Because the vehicle could not maintain speed, I was unable to keep up with traffic, creating a serious safety hazard that could have resulted in a major accident. 3. The vehicle has been inspected by an independent service center for diagnosis. 4. During the incident, the “Engine Power Reduced” warning indicator illuminated just before the loss of power occurred. 5. As the vehicle slowed and came to a complete stop at an intersection, it remained unresponsive. When the traffic light turned green, the vehicle would not accelerate at all.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699191November 13, 2025
SERVICE BRAKES
Vacuum pump went out. It was a recall, previously on older models, but this model needs to
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698842November 11, 2025
UNKNOWN OR OTHER, ENGINE, ELECTRICAL SYSTEM
Vehicle has had check engine light and engine reduced power flicking on and off for months, randomly reducing power on highway or nearly causing accidents. Brought car to GMC dealer, they said it was underboost code and needed new turbo. Paid over 7,000$ for repair. Next morning, same issue still was happening. I believe my vehicle has EMISSIONS recall issue “N192271200 Charge Air Cooler Disconnect at Throttle Body” but GM has not properly attached my vin number for this recall repair. I have poured thousands into repairs out of pocket and the same issue still persists. I believe strongly the recall emission issue is the problem and should be on my vin. Vehicle has been to dealer 3 times in the past 2 weeks, issue has not been fixed. Improperly diagnosed, random repairs made not fixing actual issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698477November 10, 2025
ENGINE, STEERING
The power steering assembly failed and caught on fire. This then caused the engine to malfunction and no longer work. This happened while driving on the interstate at a speed of approximately 80mph. No prior check engine lights were visible
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11698637November 10, 2025
FUEL SYSTEM, GASOLINE
The contact owns a 2022 GMC Terrain. The contact stated that while driving at an undisclosed speed, the engine seized. No warning lights were illuminated. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to the residence. In addition, the contact stated that the failure occurred while the contact was driving on the highway. The contact stated that an independent mechanic inspected the vehicle and diagnosed the vehicle with a failed fuel pump. The contact was informed that the fuel pump needed to be replaced. The vehicle was not repaired. The dealer was made aware of the failure. In addition, the contact referenced an unknown recall that had a similar failure description; however, the VIN was not associated with the recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,126.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698362November 8, 2025
UNKNOWN OR OTHER
I was driving on the highway below the speed limit when I heard a pop that sounded like a balloon and instantly the sound of wind getting into the car. I pulled over and found that the sunroof was rapidly shattering. I did not see a rock that had hit it. Maybe the tempered glass just exploded. I was not driving very close by any other vehicles at the time, but was on the highway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698340November 8, 2025
SERVICE BRAKES
I filed a complaint with NHTSA on November 3, 2025, about my brake system. Here is another one adding more information. I had to have another brake system part replaced. This time it was the brake booster. Cost $1441.63 (covered by extended warranty actual cost to me $100.00.) So far, I have had the booster sensor replaced twice, the vacuum pump and now the brake booster. I asked the mechanic how many parts related to this system were left to replace? This vehicle has 66,000 miles on parts for the braking system started needed to be replaced at 37,000 miles. The total cost for parts, labor is about $500. That does not include the loss of use for this vehicle which is about 15 days. Taking days off of work about 6 days. This has been a problem for GMC Terrains since 2015; there is still a problem with 2020 model year. Please do something before there is a loss of life due to brake failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698239November 7, 2025
ELECTRICAL SYSTEM, POWER TRAIN, LATCHES/LOCKS/LINKAGES:DOORS:LATCH
The contact owns a 2018 GMC Terrain. The contact stated that the transmission was shifting gear erratically. The contact stated that the doors were locking and unlocking independently, and the instrument cluster was blank. There was an abnormal beeping sound coming from the vehicle. Additionally, the contact stated that while at a traffic light, the Auto START/STOP feature delayed to respond. OnStar was alerted, but the contact declined to perform the service. The contact was in contact with the independent mechanic who sold the vehicle, but no assistance was provided. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 130,000. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698105November 7, 2025
ENGINE, ELECTRICAL SYSTEM
GMC Terrain with 12,564 total miles had experienced an engine failure. Under normal driving conditions, the car was sluggish and would not accelerate properly when pulling out into traffic or when getting on the freeway/interstate causing fear for driver safety and causing traffic slowdowns or congestion with a significantly increased risk of crash. While driving to work, the vehicle service engine light turned on and displayed "reduced engine power". Upon investigation the dealership found codes P0011, P0014, P0016, P0017, and quoted "Cylinder 4 intake rocker had fallen off and laying on head, found excessive debris and metal material around rocker 4, Found cylinder 2 intake rocker to be worn sideways. Found heavy damage to intake camshaft. Removed oil filter - found excessive metal in oil filter". Secondary issue, infotainment screen would randomly flash bright white on the right half, causing a major driver distraction. Engine, turbo, and infotainment system were all replaced, and vehicle returned 11.06.2025
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11697102November 3, 2025
SERVICE BRAKES
Check engine light is on took vehicle to dealership 10/13/2023 vacuum booster sensor replaced (37,435 miles) $0 GM Covered cost 12/9/2024 brake vacuum pump replaced (56,456 miles) $0 extended warranty 1/8/2025 vacuum booster sensor replaced (57,087 miles) $252.48 not covered by warranty Check engine light is on 10/11/2025 took to dealership. They were unable to find issue light was off, was told that GM had recommended several things that could be the cause of light coming on still could not find issue. Last thing GM and dealership recommended was to replace the battery. Cost $104.00 Check engine light came on 10/25/2025 while returning home from Tennessee to Michigan, light came on in Louisville, KY. Had it scanned, booster sensor was the cause. Called AAA had them replace battery light went off. (as you know that if you do that it reset the computer not surprised light went off drove rest of the way home to Michigan) Cost of replacement battery $295.00 Check engine light came on again 11/2/2025 my best bet is that it is booster sensor again. NHTSA and GM need to fix this issue. I have not lost breaking ability yet but the horror story that I've read on this site scars me. WHAT ARE IS NHTSA AND GM GOING TO DO WAIT UNTIL SOMEONE IS KILLED BECAUSE OF THIS ISSUE !!!!!!!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696797October 31, 2025
CHILD SEAT
The contact owns a 2021 GMC Terrain. The contact received notification of NHTSA Campaign Number: 23V339000 (Child Seat); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted and informed the contact that the vehicle would not be inspected or repaired. The manufacturer was made aware of the issue. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696555October 30, 2025
SERVICE BRAKES
SERVICE BRAKE ASSIST CAME ON, CHECK ENGINE LIGHT CAME ON AND VEHICLE WAS HARD TO STOP. Took to authorized service dealer and all parts were replaced. After driving it for a little while, SERVICE BRAKE ASSIST BACK ON, CHECK ENGINE LIGHT BACK ON AND VEHILCE IS HARD TO STOP.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11696252October 29, 2025
AIR BAGS
My car said to me this not that there is something wrong with the Service Safety Restraint system! It was fine last night when I got home! I just bought this car a month ago and everything was fine and now my air bag light is on and will not go off!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696336October 29, 2025
FUEL/PROPULSION SYSTEM
My wife was driving down the road and all of a sudden the car just shut off and wouldn’t start back up. She called me and I went to her and tried to get the started with no progress so I called a tow truck to come pick it up and come to the mechanic shop to have it fixed. They run a diagnostic test on it and it was the fuel module. Called the gmc in my town and the said it was not covered under warranty or there wasn’t a recall on it either. W needed my car fixed so I called around to find a fuel module and finally found one in north Myrtle Beach. I had to go and pick it up around 75 miles from where I live and bought it back to the mechanic. He put in on and that fixed the problem. A lot of the 22 Terrian’s has a recall but mine doesn’t. I would like to know why mine doesn’t and it only has 53,000 miles and mine falls in the same category as all the others. I think I should be reimbursed having to pay to have mine repaired.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695367October 24, 2025
SERVICE BRAKES, ELECTRICAL SYSTEM
Break assist light comes on and brakes stiffen suddenly with no warning. Happened 6 times now in a 3 year span. Gotten it "fixed" each time but it keeps happening
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695299October 23, 2025
FUEL/PROPULSION SYSTEM, ENGINE
From a complete stop my car refused to accelerate no matter how much I pushed the gas pedal. I was pulling into traffic and was on a hill so my car rolled forward naturally into the road but would not respond to the gas pedal. The RPMs didn't move, the car had power, I tried putting it in reverse and then back into drive. Nothing worked for a solid 2 minutes at least. Then all of a sudden it registered and worked. I was almost t-boned from a car coming through the curve but luckily, they were able to go around me in time. This put me and my small daughter at risk of being severely injured from a malfunction that I can't recreate to show the technicians. Since this incident, it has happened several times randomly. Sometimes I'm at a red light, or backing out of a parking spot, or pulling out into traffic. When it happens, there are no codes thrown to show any engine malfunctions, but it WILL NOT MOVE! I've noticed more and more the lack of power when driving. Almost as if the transmission is slipping or losing power as well. I bought the car new, only have 38K miles on it, and service it every 5k miles at a GMC dealership. This is going to end up killing someone. The mechanic told me to trade it in, but I just paid it off and it's only 5 years old. There are multiple complaints about this same thing happening with tons of Terrains and there isn't a recall yet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695207October 23, 2025
UNKNOWN OR OTHER
The Vehicle Identification Number for this vehicle is not recognized in the NHTSA program. From Online vehicle registration Oahu Hawaii
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Terrain