GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 428783  Size: SH
  1. Lower the headliner in order to access the drain hose connections. Refer to Headlining Trim Panel Replacement in Interior Trim.
  2. Cut the tie wraps from the front drain hose drain spouts.
  3. Disconnect the front drain hoses from the sunroof module assembly drain spouts.
  4. Remove the tape securing the drain hoses to the windshield pillars.
  5. Remove the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement in Body Front End.
  6. Remove the front drain hose from the inner wheelhouse of the vehicle.

Installation Procedure


    Object Number: 428783  Size: SH
  1. Install the drain hoses up through the inner wheelhouse to the sunroof module assembly.
  2. Tape the front drain hoses into position on the windshield pillars.
  3. Install the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement in Body Front End.
  4. Connect the drain hoses to the drain spouts on the sunroof module assembly.
  5. Important: When installing the new drain hose tie wraps, position the tie wraps in order to maintain clearance between the tie wraps and the headliner.

  6. Secure the drain hoses to the sunroof module assembly drain spouts with new tie wraps.
  7. Install the headliner to the roof. Refer to Headlining Trim Panel Replacement in Interior Trim.