GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Move the front sunroof window to the full open position.
  2. It is only necessary to lower the headliner. Only do those step in headliner replacement that will lower the headliner enough to gain access to the part. Refer to Headlining Trim Panel Replacement.
  3. Remove the screws from the front track extension.
  4. Loosen the 3 forwardmost screws from the front sunroof track.
  5. Loosen the remaining track screws including the screw retaining the rear extension block to the sunroof cable drive tubes.

  6. Object Number: 903758  Size: SH
  7. Flex the track downward in order to across the front extension track slot (1).
  8. With a flat-bladed tool in the track slot (1), release the tab securing the front extension to the track (3)
  9. Remove the front track extension (2).

Installation Procedure


    Object Number: 901556  Size: SH
  1. Position the front track extension (4) to the track (1).
  2. Note: Ensure that the release tab (2) is secure to the track (1).

  3. Ensure that the front track is parallel to the opposite side track prior to securing the screws.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Loosely install the 3 forwardmost screws to the front sunroof track.
  6. Tighten
    Tighten the screws to 5 N·m (44 lb in).

  7. Install the screws to the front track extension.
  8. Tighten
    Tighten the screws to 5 N·m (44 lb in).

  9. Install the headliner. Refer to Headlining Trim Panel Replacement.
  10. Close the front sunroof window.