The contact owns 2021 GMC Terrain. The contact stated upon starting the vehicle and attempting to shift the vehicle to drive, the vehicle inadvertently reversed. The contact depressed the brake pedal. There were no warning lights illuminated. The contact stated that the gear shift selector was stuck in park(P) position while the instrument panel was displaying that the vehicle was in neutral. The vehicle was towed to the dealer who informed the contact that they could not replicate the failure; however, the vehicle remained under observation at the dealer. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was unknown. The VIN was not available.

- Muscatine, IA, USA

My 2021 gmc terrain with 6000 miles on odometer. When driving up hill or going around corner transmission shudders so bad that it feels like front tires are coming off. I contacted the dealer and gm and was told there is a tsb for this complaint. GM and dealer acknowledged there was a problem but they didn't have a fix or known cause of problem

- Alto, MI, USA

When driving car starting from a red light/getting on freeway or after making turn from a stop light when accelerating between 45 and 60 car shakes when shifting. Problem is getting worse. Car only has 6000 miles on it. I reported it to local gmc dealer and I was told GM is aware of the problem and they do not have a solution. They mentioned there is a TB out for several models that customers have reported same problem

- Alto, MI, USA