Some vehicle accessories may be used after the ignition is turned off.
The power windows and sunroof, if equipped, will continue to work for up to 10 minutes or until any door is opened.
The infotainment system will continue to work for 10 minutes, until the driver door is opened, or until the ignition is turned on or placed in ACC/ACCESSORY.
Engine Heater
Shifting Into Park#13-00-89-004C: Car and Truck Fix it Right the First Time Issues - (Oct 10, 2013)
Subject:Car and Truck Fix it Right the First Time IssuesModels: 2014 and Prior GM Cars and Trucks This bulletin has been revised to include updated information. Please discard CorporateBulletin Number 13-00-89-004B.In order to access this bulletin electronically, go to the SI Home Page and selec ...