2022 GMC TERRAIN Complaints

Three times in one month, four months after purchasing vehicle from dealership, the vehicle stalls while driving and will not restart. After running codes, each instance prompted a P129F code for the fuel pump driver control module. After the second incident, the vehicle was inspected by a qualified repair shop and no issue or stored codes were found. When the issues occur and the car stalls, the Check Engine Light and a Low Battery warning message can be seen on the instrument panel. When this issue occurs, the vehicle's gears cannot be shifted manually. The vehicle must be force shifted by hand, via transmission components under the hood, in order to place the car into neutral.

The contact owns a 2022 GMC Terrain. The contact stated while driving at an undisclosed speed, the vehicle stalled, and the vehicle lost motive power. The contact stated the failure occurred while driving on a busy highway. The contact called the Emergency Services, who arrived on the scene and assisted with moving the vehicle to the shoulder of the road. The contact stated that the situation was very frightening. The vehicle was towed to the dealer, where it was diagnosed with fuel pump module failure. The contact was informed that the fuel pump module needed to be replaced. The vehicle was being repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 18,886.

The contact owns a 2022 GMC Terrain. The contact stated that while the vehicle was idling, there was while smoke coming from the exhaust pipe. The vehicle was taken to the dealer and was diagnosed with oil intrusion into the pistons, causing transmission failure. The contact was informed that the transmission needed to be replaced. The dealer changed the oil and advised the contact to return every two thousand miles. On a separate occasion, the contact stated that while her husband was driving at various speeds, the vehicle hesitated and jerked. There were no warning lights illuminated. The contact stated that the failure had progressively worsened. The manufacturer was not notified of the failure. The failure mileage was 18,686.

The backup camera on my vehicle stopped working completely, displaying a blank screen. All other cameras and sensors continue to function normally. The dealership identified the issue as the camera having “shorted out” and is replacing it with a completely new unit. The faulty camera is currently with the dealership, and I assume it would be available for inspection upon request. It is being replaced and I will receive a bill in a few days (Wednesday March 10, 2025). The backup camera is a critical safety feature designed to prevent collisions with pedestrians, objects, and other vehicles when reversing. Without a functioning camera, visibility is significantly reduced, increasing the risk of an accident, especially in crowded parking lots or areas with low visibility. The sudden and unexplained failure of this system is a serious safety concern. Yes, the dealership confirmed the issue when I brought my vehicle in for inspection. They determined that the camera had “shorted out” and ordered a full replacement. The vehicle has been inspected by the dealership, which is handling the replacement. To my knowledge, no manufacturer representatives, police, or insurance agents have examined the issue. There were no warning lights, error messages, or other indications before the failure. The backup camera was functioning normally, then suddenly stopped working, displaying a blank screen. I have heard that Cadillac and GMC Acadia models have experienced similar backup camera issues, leading to recalls due to sudden failures. Given that my vehicle’s camera “shorted out” without warning, I believe this may be part of a broader issue affecting GM vehicles. If this is a recurring problem, it poses a serious safety risk and should be investigated further.

The contact owns a 2022 GMC Terrain. The contact stated while driving in a parking lot, and the brake pedal was depressed; however, the vehicle hesitated and stalled. The vehicle failed to immediately restart but restarted after waiting for 10 minutes. The vehicle was taken to the residence. The contact retrieved DTC: P129F while using a handheld scanner. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 76,670.

OnStar module failure Its backordered across the entire country, its only reasonable to assume it's a problem. Online information I've seen is it's an issue with a lot of vehicles

This is the second time this occurred, once in Oct 2024 and on 1/25/25. While driving the check engine light came on and within one minute the vehicle began to stall and within 20 second the engine shut off. The first time it happened in the middle of the road and the second time I was just able to turn onto a side street. In both cases the vehicle would not restart and left me stranded.

Engine failure at low mileage. 60,300 miles. Piston 1 failed. Broken rings. Needs full engine replacement. GM will not stand by their product and repair it.

Module malfunction open-fuel pump driver control. Engine stops at any time, pressing gas pedal and nothing, the engine stops running no warning. Module has been replaced twice this vehicle should be on recall. When it happens you have no warning and no control. This is life threatening.

The contact owns a 2022 GMC Terrain. The contact stated while driving at approximately 25 MPH, the vehicle was losing forward momentum. The contact stated that she depressed the accelerator pedal and the vehicle was still losing forward momentum. The contact stated that she was also smelling the odor of gasoline in the passenger cabin. No warning light was illuminated. The contact had taken the vehicle to a local dealer, where the dealer was unable to diagnose the failure since no codes were in the system due to no warning lights. The vehicle was not repaired. The contact stated that the failure was a reoccurring failure. The contact had researched online and related the failure to NHTSA Campaign Number: 23V013000 (Fuel System, Gasoline), however her VIN was not part of the recall selection. The manufacturer was informed of the failure. The failure mileage was approximately 49,000.