GM Service Manual Online
For 1990-2009 cars only

Power to the following accessories continues to work for up to 10 minutes after the engine is turned off or until a door is opened:

    • Audio System
    • Audio Steering Wheel Controls
    • Power Windows

For an additional 10 minutes of operation, close all the doors and press the Acc. button to place the vehicle in accessory mode. Press the button again to return to RAP.