GM Service Manual Online
For 1990-2009 cars only

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to Sunroof Description and Operation .

Visual/Physical Inspection

    â€¢ Inspect for aftermarket devices which could affect the operation of the Power Sunroof system. Refer to Checking Aftermarket Accessories .
    â€¢ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    â€¢ Inspect for mechanical binding.

Intermittent

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

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    â€¢  Power Sunroof Inoperative
    â€¢  Power Sunroof Does Not Close
    â€¢  Power Sunroof Window is Skewed
    â€¢  Power Sunroof When Operated from Vent to Close One Side Will Drop Before the Other
    â€¢  Power Sunroof When Closing from the Vent Position the Window Will Reverse Direction
    â€¢  Power Sunroof Will Stop at the Wrong Location
    â€¢  Power Sunroof Will Over Travel the Open Position and Stall the Motor
    â€¢  Power Sunroof Will Over Travel the Close Position and Stall the Motor