*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Seat belts
The driver side seat belt is hard to lock and unlock into the clip. Sometimes it will not lock into the clip.
Oct 12, 2026Engine
My 2023 GMC Terrain has experienced two separate incidents of complete loss of motive power/engine propulsion while being driven. The vehicle suddenly loses the ability to accelerate and maintain normal propulsion, creating a serious safety risk in traffic. The first occurrence was on August 8, 2026. The vehicle was subsequently diagnosed and repaired by an authorized Chevrolet dealership with General Motors involvement. After those repairs were completed and the vehicle was returned to me, the same loss-of-propulsion symptom occurred again on September 26, 2026, approximately two weeks after the vehicle was returned. The second failure occurred while I was actively driving and again…
Sep 26, 2026Fuel/propulsion system
I purchased this vehicle two weeks ago. It was my first time driving it since I bought it home from the dealer. I was on the highway driving about 55 mph in the left lane. All of a sudden the car started to slow down on its own going down to 15 mph without knowing what was happening. I tried to ease my way to the left and was almost hit by multiple vehicles. Once I got to the left lane the vehicle stopped running. I couldnât start it. I noticed a pool of liquid on the right side of the vehicle. I also started to detect a strong smell of gasoline. I had to get towed off the road by calling 911 for assistance. The tow truck driver also confirmed that the liquid was gasoline. I had to get…
Sep 19, 2026Air bags
Harness for the airbag gave out. Puts the passenger at risk. Confirmed by service members at Rodenroth Motors Inc. in Sault Ste Marie MI. Message said service "Restraint system". There was no official incident date. One day whenever somebody sat in the passenger side the warning would appear.
Aug 31, 2026Engine
adaptive cruise disengaging alert on dash- no cars or weather conditions to induce this. loss of power and bucking on highway( near accident caused) catostostrophic sudden loss of power engine/transmission failure while mechanic driving resulting in car towed back to dealer. loss of power multiple times causing near accidents. sudden jolting at stop light causing car to propel forward requiered both feet on brake pedal to stop. 4 episodes of near collision 1st altert started 04/4/2024 adaptive cruise light on dash 14,700 miles on vehicle 5 episodes continued and now car is still at dealership for emissions failure, loss of power x 4 weeks. ALL PHOTOS OF DASH LIGHTS, REPAIR INVOICES AND…
Apr 4, 2024Power train
The contact owns a 2023 GMC Terrain. The contact stated that while driving at various speeds, the vehicle unexpectedly decelerated and failed to properly accelerate. The service transmission and service fuel management system messages were displayed, and the check engine warning light was flashing with several other unknown warnings illuminated. The vehicle was taken to the local dealer and while test-driving the vehicle, the vehicle stalled. The vehicle was towed back to the dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failure, and an engineer was sent to the dealer to inspect the vehicle. No further information was available. The contact…
Jun 1, 2026 · 27,000 milesFuel/propulsion system
I have had 2 different instances where my vehicle stops in the middle of a busy intersection or traffic and have no warning what so ever. Vehicle just shuts off and I am not able to turn back on to move out of the way. First time I got it repaired it was related to the fuel pump and now I am waiting to hear back from my mechanic to see what the issue is but so far it is an indication of the fuel pump as well. Both times I required help from law enforcement because vehicle shut off in the middle of the road and safety to myself and other drivers was an issue until tow truck arrived to move my vehicle.
May 16, 2026Engine
The contact owns a 2023 GMC Terrain. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated and the engine stalled. The contact attempted to drive the vehicle to the shoulder of the road, the engine seized. The contact stated while attempting to start the vehicle, the vehicle failed to start. The contact The vehicle was towed to an independent mechanic where it was diagnosed with a failed fuel pump. The contact was informed that the fuel pump needed to be replaced. The failure reoccurred. The vehicle was towed back to the independent mechanic where it was diagnosed with a failed fuel injector. The contact was informed that the fuel injector…
Oct 11, 2025 · 45,000 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.