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 Power Sunroof Operation .

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the Power Sunroof 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 Intermittents and Poor Connections Diagnosis in Wiring Systems.

Symptom List

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

    •  Power Sunroof Does Not Close
    •  Power Sunroof Does Not Open
    •  Power Sunroof Does Not Open to Express Position
    •  Power Sunroof Does Not Open to Vent Position