Diagnostic Starting Point - Retained Accessory Power
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Begin the system diagnosis with a Diagnostic System Check - Retained Accessory Power .
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.