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

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

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