2022 Chevrolet Traverse electrical system problems

After turning the car on, engaging reverse, and then retuning back to park (driver stepped out of vehicle once in park) the vehicle reversed 60 feet on its on through a parking lot with 2 children inside of the car (disengaged from park on its own while vehicle was running). The vehicle was ultimately stopped by a tree with damage to the tailgate and rear. The gear shift selector remained in park for the entire incident.

The contact owns a 2022 Chevrolet Traverse. The contact stated that while the vehicle was parked, an alarm that indicated that the vehicle was not parked sounded, while the gear shifter was in park(P) and the engine was turned off. The contact stated that the failure had been persisting. An unknown dealer was made aware of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,000. The VIN was unavailable.