What 389 owners told NHTSA about the 2018 GMC Acadia Denali

My 2018 GMC Acadia is having the shift to park error. Causing it to not park; or error it causing us not to be able to turn vehicle off or know if it's in park. It pops up multiple times.

NHTSA ODI 11683039

Shift to park warning when parking and shutting down vehicle. Shifter is in park but will not shut off electrical system of vehicle.

NHTSA ODI 11454874

I have numerous warnings, shift to park, steering, cross traffic, this endangers myself and anyone else around me, i have read several class action suits involving these problems and it could cause my vehicle to pose a danger, I have taken my vehicle in to a certified dealer and they state there is no known recalls associated with my vehicle which is strange because GMC knows that there are thousands of vehicles having the same problem, did I buy a lemon? These problems are clearly manufacture related and in no way normal wear and tare. I should not have to compensate these issues when I paid near 40,000 for it

NHTSA ODI 11418960

WHEN PARKING CAR IT KEEPS TELLING US TO PARK WHEN IT IS IN PARK AND WE CAN TURN IT OFF

NHTSA ODI 11399780

I PLACE VEHICLE IN PARK AND THE COMPUTER DOES NOT RECOGNIZE SO THE BELL COMES ON. I HAVE TO GO IN AND OUT OF PARK SEVERAL TIMES BEFORE IT ENGAGES. THIS OCCURS WHEN I AM TURNING THE ENGINE OFF, I FIRST PLACE IN PARK THEN PUSH THE IGNITION TO SHUT OFF. WE HAD A PRIOR ISSUE WHERE THE EMERGENCY BRAKE WAS ON, AUTO BACKED IN A DRIVEWAY WITH SLIGHT INCLINE, AND WHEN WE TRIED TO DISENGAGE IT WAS SIMPLY STUCK, WE CALLED TO TOW THE CARE; ONCE DRIVER ARRIVED WE WENT THROUGH THE RELEASE ONE MORE TIME AND IT FINALLY RELEASED. SINCE THAT TIME, I NEVER USE THE PARKING BRAKE. THAT OCCURRED APPROXIMATELY 9/20/2018..

NHTSA ODI 11397733