GM Service Manual Online
For 1990-2009 cars only

Power Sunroof System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to ON.
  2. Momentarily press the power sunroof slide switch to the EXPRESS OPEN position.

Sunroof slides to the fully open position. To abort express mode, press sunroof switch to any position.

Power Sunroof Does Not Open

2

Press and hold the power sunroof slide switch to the CLOSE position.

Sunroof slides to the fully closed position.

Power Sunroof Does Not Close

3

Press and hold the power sunroof vent switch to the OPEN position.

Sunroof rear moves to the fully opened position.

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4

Press and hold the power sunroof vent switch to the CLOSE position.

Sunroof rear moves to the fully closed position.

Power Sunroof Does Not Close

5

Press and hold the power sunroof slide Switch to the OPEN position.

Sunroof slides to the fully open position.

Power Sunroof Does Not Open

Note: After the system check has been performed, return the sunroof to the flush CLOSE position to continue diagnostics.

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.