GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Roof 🢒 Sunroof 🢒 Sunroof Sunshade Replacement

Removal Procedure

    Object Number: 786921 Size: SH
  1. Cycle the sunroof window to the vent position in order to ease in the removal of the forward adjusting screws (2).
  2. Slide the sunshade rearward.
  3. Disconnect the sunroof panel side opening closeout covers (5) from the retention clips (1, 3, 4) in order to access the sunroof window screws (2, 6).

    4. Object Number: 468350 Size: SH
  4. Remove the sunroof window screws (1) from both sides.
  5. Carefully lift the sunroof window from the sunroof opening.

    6. Object Number: 470258 Size: SH
  6. Remove the screws (2) from each end of the drain channel (3).
  7. Move one edge of the drain channel forward.
  8. Remove the drain channel from the sunroof module opening.

    9. Object Number: 1609774 Size: SH
  9. Carefully arch the sunshade upward at the forward center edge.
  10. Carefully lift the front edge of the sunshade (2) upward out of the opening to release tabs from the track.
  11. Slightly rotate the sunshade panel in order to remove the panel from the track assembly.
  12. Carefully remove the sunshade panel upward from the sunroof module.

Installation Procedure

    Object Number: 1609774 Size: SH
  1. Position rear edge of the sunshade panel to the track.
  2. Ensure the retention tab at the rear is positioned into the track.
  3. Arch the forward edge of the sunshade (2) in order to locate the retention clip into the sunshade track.
  4. Locate the tabs into the tracks and release.
  5. Slide the sunshade panel forward and rearward to ensure free operation is present.

    6. Object Number: 470258 Size: SH
  6. Position the sunroof drain channel (3) to the sunroof module (4).

    7. Caution: Refer to Fastener Caution in the Preface section.

  7. Install the screws (2).

    8. Tighten
    Tighten the screws to 2 N·m (18 lb in).


    Object Number: 468350 Size: SH
  8. Position the sunroof window (3) into the opening.
  9. Install the sunroof window screws (1).

    10. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  10. Finger tighten the screws. Do Not tighten at this time.
  11. Cycle the sunroof window to the closed position.
  12. Adjust the sunroof window. Refer to Sunroof Window Height and Opening Fit Adjustment.

    13. Object Number: 786923 Size: SH
  13. Secure the sunroof panel side opening closeout covers (2) into 3 retention clips on the each side of the window.
  14. Close the sunshade (1).