2024 GMC Terrain Driver assistance Problems

I am reporting a recurring backup camera malfunction in my 2024 GMC Terrain AT4. Since purchasing the vehicle, I have experienced repeated instances in which the rearview camera display goes completely black when the vehicle is shifted into reverse. This prevents me from seeing the camera image while backing up. The malfunction presents a safety concern because the rearview camera is an important aid in identifying pedestrians, children, objects, and other vehicles behind the vehicle. When the display goes black, I lose that visual assistance, increasing the risk of backing into a person or object, particularly in parking lots, driveways, and other areas where pedestrians may be present. I have taken the vehicle to authorized dealerships for multiple service visits and repair attempts. Despite these efforts, the same backup camera failure continues to occur. Although different components may have been inspected, repaired, or replaced during these visits, the recurring problem remains the same: the backup camera display goes black when the vehicle is in reverse. The underlying cause has not been adequately resolved. The vehicle has been presented to authorized GM dealerships for diagnosis and repair, and the relevant service records should document the repair attempts and the recurring complaint. I have also submitted a repurchase request to GM because of the ongoing issue, but my request was declined. I am requesting that NHTSA document and review this recurring malfunction because of the potential safety risk associated with losing the rearview camera image while reversing. I am concerned that this issue could result in a collision or injury if the driver is unable to see a person or obstacle behind the vehicle. I can provide available service records and make the vehicle available for inspection upon request.

NHTSA ID

11768559

Incident

Jun 24, 2026

I was driving about 55 mph with adaptive cruise control set to maintain a three-car-length following distance. It was raining, and when the vehicle in front of me slowed down, my vehicle did not detect it or slow down as expected. Instead, it continued accelerating, and I had to brake to avoid rear-ending the vehicle ahead.

NHTSA ID

11750466

Incident

Jul 13, 2026

This is a continuation for NHTSA campaign number 11711615. While an additional NHTSA complaint has been filed for the power train, this focuses specifically on design failures in the braking system. Our vehicle experienced a highway failure of the fuel pump, but due to the nature of a powertrain failure the car could not be put into neutral, only remain in park. The car was stranded in the middle of the road. As a AWD vehicle it similarly could not be towed as both wheels were fully locked. Tow informed us that there should be a manual release under the shifting column, however, this design safety feature had been removed in the 2024 iteration. The car was stuck on the road behind a blind turn on a somewhat busy road with vehicles typically traveling between 25-50 mph. The failure of a manual override for neutral and braking is a critical design failure that can lead to major accidents and death in the event of engine or transmission failure. There were no warnings, nor instructions or ability to get the car off the road.

NHTSA ID

11734066

Incident

Jan 16, 2026

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?

NHTSA ID

11681027

Incident

Jul 15, 2025

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.

NHTSA ID

11662023

Incident

Jul 12, 2024

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.

NHTSA ID

11658371

Incident

Apr 20, 2025

Vehicle every other morning shows issue with blind spot assist. It keeps popping an error message and it has happened since I purchased it new. Took it multiple times to dealership and they cannot recreate issue. So it's been an issue since I bought it now.

NHTSA ID

11658040

Incident

Apr 30, 2025

Was driving along and transmission downshifted (?) wouldn't change gears. Tachometer was like a race car. Just went wild. Limped it along to a dealership. They informed us it was probably the transmission. It was determined it was indeed the transmission. They also stated that they had 7 more waiting in the service area waiting for parts to repair. Ours was to be #8. We called the dealer we bought it from, they sent a tow truck and towed it to their service area. Luckily, I wasn't out on the interstate going 70 mph as I would have been in just a few more minutes. Very scary situation as I was in 3 lanes of traffic. It was in town, so traffic wasn't moving fast. I was 2 hours into my vacation. Needless to say, that put a damper on things. Had to rent a vehicle, unpack my vehicle and repack the rental. Oh, and by the was it is a 2024 Terrain with ONLY 2400 miles!

NHTSA ID

11600652

Incident

Jul 3, 2024