GM Service Manual Online
For 1990-2009 cars only

The following accessories on your vehicle may be used for up to 10 minutes after the ignition key is turned from ON to OFF:

    • Radio
    • Power Windows
    • Audio Steering Wheel Controls
    • Sunroof

Power to these accessories stops after 10 minutes or if a door is opened. If an additional 10 minutes of power is needed, close all the doors and turn the ignition key to ON and then back to OFF.