Diagnostic Starting Point Retained Accessory Power
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. 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.