GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Roof 🢒 Power Sunroof System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch to RUN.
  2. Slide the sunroof switch backward. Release the sunroof switch before the sunroof fully opens.

In order to abort the express open mode, move the sunroof switch once in any direction.

The power sunroof moves smoothly to the fully-open position.

Power Sunroof Does Not Open

2
  1. Slide the sunroof switch forward.
  2. Release the sunroof switch before the sunroof fully closes.
    • The sunroof moves toward the closed position.
    • The sunroof stops when the sunroof switch is released.

Power Sunroof Does Not Open

3

Slide forward and hold the sunroof switch.
    • The power sunroof moves to the fully-closed position.
    • The power sunroof stops.

Power Sunroof Does Not Open

4

Push up the sunroof switch.

The power sunroof moves to the vent open position.

Power Sunroof Does Not Open to Vent Position

5
  1. Pull down the sunroof switch.
  2. Release the sunroof switch before the power sunroof fully closes.
    • The power sunroof moves to the fully-closed position.
    • The power sunroof stops.

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