The contact owned a 2021 GMC Terrain. The contact stated while the brake pedal was depressed, it was released and the vehicle suddenly accelerated aggressively. The contact attempted to avoid crashing into the vehicle in front and swerved however the front of the vehicle still impacted the vehicle in front. The air bags deployed upon impact. A police report was filed. The contact stated no medical attention was provided, but did suffer bruises from the air bag and seat belt. The vehicle was towed to an independent mechanic. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was not available.

- Lansing, MI, USA

When car has been unused for a period of time, the right rear brake makes noise when the car is moved. This happend in either forward or reverse. Even after driving for a short period of time, the noise is still evident. Under warrenty, I asked the dealership to resolve. They indicate this is an ongoing investigation by GM. I purchased the car new in July 2021. This problem has persisted since purchase. I have reported it multiple times to the dealer but they pass it off as GMs problem. In reviewing other similar complaints for the 2020 model, it was resolved by changing the brake pads to a different material. Surely GM can find a cure after 3 years since production.

- Altus, OK, USA

Recently I have noticed that the back brakes squeak and sound like they are grinding when backing up. Also every now and then the information screen will go black for a while then turn back on could be a few seconds or several minutes. 23,900 on car

- Plainfield, IL, USA

i WAS GOING TO MY SONS HOME WHICH IS LOCATED ON A STEEP DOWHILL STREET WITH SEVERAL TURNS, ONE OF THER ALMOST 90 DEGREES.aS i STARTED TO DESEND THE HILL AND GAIN SPEED, I DEPRESSED THE FOOT BRAKE. iT DID NOT RESPOND AT ALL. AS I CONTINUED TO GAIN SPEED AND COMING UP ON THE SHARP CURVE, I CONTINUED TO PUMP AND APPLY BRAKE. tHE BRAKES DID NOT WORK. i CONTINUED TO GAIN SPEED AND GO AROUND 2 OTHER TURNS. AT THE END OF THE STREET i HAD A CHOICE TO CONTINE STRAIGHT AHEAD AND HIT A HOUSE, TURN RIGHT AND CONTINUE DOWN ANOTHER STEEP STREET UNTIL I HIT A HOME AT THE END OF THE STREET OR TRY TO TURNLEFT ANDGO UP HILL. i TURNE LEFT UP THE HILL AND FINALLY GOT STOPPED BEFOR i COULD PUT THE VEHICLE IN PARK OR APPLY THE BRAKE I BEGAINTO ROLL BACKWARDS ON THE STEEP INCLINE. i ROLLED BY ANDHIT A CURB, JUMPED INTO THE YARD AND HIT A BUSH, SMALL TREE AND AN ELECTRIC GROUND TRANSFORMER, COMING TO RESET ABOUT 4 FEET OF THE GROUND ON TOP OF THE TRNSFORER.. tHE UTILITY WORKERS SAID THAT I WAS LUCKY NOT TO GET EECTROCUTED. tHIS VEHICLE WASPURCHASED ABOUT 7 DAY PRIOR TO THE ACCIDENT, THE BRAKES SIMPLY FAILED ADDID NOT WORK AT ALL

- Little Rock, AR, USA