GM Service Manual Online
For 1990-2009 cars only

    Note: Correct adjustment cannot be achieved if the sunroof window is closed from vent position.

  1. Cycle the sunroof window from full open to closed position.

  2. Object Number: 977336  Size: SH

    Note: Do Not remove or lower headliner to access sunroof window screws.

  3. Loosen the adjusting screws on the window.
  4. Adjust the corners of the front window panel using the following guidelines:
  5. • Adjust the front of the sunroof window to 0.0 mm - 1.0 mm (0.0 in - 0.04 in ) below the top surface of the roof panel.
    • Adjust the rear center line of the sunroof window to 2 mm  to  3 mm (0.08 in  to 0.12 in ) below the top surface of the roof panel.

    Caution: Refer to Fastener Caution in the Preface section.

  6. Tighten the sunroof window adjustment screws to 5 N·m (44 lb in).
  7. Cycle sunroof window through all positions.
  8. Inspect the sunroof window adjustment. Adjust if necessary.