I've had the same problem for the past month. The problem occurs about 1 in four attempts to turn off vehicle. Brought the car to a Chevy dealership today but they couldn't reproduce the fault. They said no faults were registered in the diagnostic. They were not aware of this being a pervasive problem. I plan on photographing the dash the next few times it happens for the next service call.
Last edited by L3VIRGINIA; 11-13-2018 at 02:18 PM.