Diagnostic Starting Point - Body Control System
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Begin the diagnosis of the body control system by performing the diagnostic system check for the system in which the customer concern is apparent. The diagnostic system check will direct you to the correct procedure for diagnosing the system and where the procedure is located.