GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. 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 .

  2. Object Number: 1378635  Size: SH
  3. Remove the rear drain hoses from the sunroof module.
  4. Remove the tape from the drain hose.

  5. Object Number: 1378638  Size: SH
  6. Remove the upper portion of the rear drain hoses from the retaining clips.
  7. Remove the rear side trim panels. Refer to Center Pillar Upper Garnish Molding Replacement .
  8. Remove the lower portion of the rear drain hoses from the retaining clips.
  9. Pull the rear drain hoses up through the side rail.

Installation Procedure

  1. Route the rear drain hose down through the access hole in the side rail.

  2. Object Number: 1378638  Size: SH
  3. Push the end of the rear drain hoses down into the rear compartment opening.
  4. Clip the lower portion of the rear drain hoses into position.
  5. Install the rear side trim panels. Refer to Center Pillar Upper Garnish Molding Replacement .
  6. Clip the upper portion of the rear drain hoses into position.

  7. Object Number: 1378635  Size: SH
  8. Install the rear drain hoses to the sunroof module.
  9. Install the headliner. Refer to Headlining Trim Panel Replacement .