NHTSA complaint: 2025 GMC SIERRA 1500 — POWER TRAIN
Truck was in "Park" idling for 20 minutes when it went from Park to "Reverse" on its own. A person sitting in a dump truck saw the backup lights on my truck come on and the truck started backing towards his truck. My truck hit his truck causing damage to my left rear bumper.
National Highway Traffic Safety Administration — Office of Defects Investigation