GM Service Manual Online
For 1990-2009 cars only

These vehicle accessories can be used for up to 10 minutes after the ignition key is turned off:

    • Audio System
    • Audio Steering Wheel Controls
    • Power Windows
    • Sunroof (if equipped)

Power to these accessories will work up to 10 minutes or until the driver's door is opened. For an additional 10 minutes of power, close all the doors and turn the key to ON/RUN and then back to LOCK/OFF.