GM Service Manual Online
For 1990-2009 cars only
  1. Open the sunshade.
  2. Close the sunroof window.

  3. Object Number: 1222454  Size: SH
  4. Loosen the 3 adjusting screws on each side of the sunroof window.

  5. Object Number: 876959  Size: MH
  6. Adjust the corners of the window panel (3) using the following guidelines:
  7. • Adjust the front of the sunroof window (2) flush to 1 mm (0.04 in) below the top surface of the roof panel.
    • Adjust the rear of the sunroof window (1) flush to 1 mm (0.04 in) above the top surface of the roof panel.

    Caution: Refer to Fastener Caution in the Preface section.

  8. Install the sunroof window adjustment screws and tighten to 4 N·m (35 lb in).
  9. Inspect the sunroof for proper operation.