GM Service Manual Online
For 1990-2009 cars only

Important: Review the system description and operation in order to familiarize yourself with the system functions. Refer to: Luggage Compartment Description and Operation In Body Rear End

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the system. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.