GM Service Manual Online
For 1990-2009 cars only

Sunroof Housing Front Drain Hose Replacement Lower

Removal Procedure

  1. Remove the front fender. Refer to Front Fender Replacement.
  2. Remove the hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement.

  3. Object Number: 1938784  Size: SH
  4. Disengage the drain tube (1) from the front sunroof grommet.

  5. Object Number: 1938769  Size: SH

    Important: Heat the front sunroof grommet to aid in removal.

  6. Remove the front sunroof grommet (1) from the front hinge pillar.
  7. Discard the front sunroof drain grommet.

  8. Scrape the remaining adhesive of the front sunroof grommet from the front hinge pillar.

Installation Procedure


    Object Number: 1938769  Size: SH
  1. Install the NEW front sunroof grommet (1) to the front hinge pillar.
  2. Heat the front sunroof grommet to allow adhesion of the front sunroof grommet to the front hinge pillar.
  3. Important: The only suitable lubricant is clean water for the drain hose installation.


    Object Number: 1938784  Size: SH
  4. Connect the front lower drain tube (1) to the front sunroof grommet (2).
  5. Inspect for proper drainage.
  6. Install the hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement.
  7. Install the front fender. Refer to Front Fender Replacement.

Sunroof Housing Front Drain Hose Replacement Upper

Removal Procedure

  1. Remove the headliner. Refer to Headlining Trim Panel Replacement.

  2. Object Number: 1938792  Size: SH
  3. Disengage the front drain hose from the front drain tube (2).

  4. Object Number: 1938788  Size: SH
  5. Disengage the front drain hose from the sunroof front drain spout (1).
  6. Remove the front drain hose (2) from the vehicle.

Installation Procedure

    Important: The only suitable lubricant is clean water for the drain hose installation.


    Object Number: 1938788  Size: SH
  1. Install the front drain hose (2) to the vehicle.
  2. Connect the front drain hose to the sunroof front drain spout (1).

  3. Object Number: 1938792  Size: SH
  4. Connect the front drain hose to the front drain tube (1).
  5. Inspect for proper drainage.
  6. Install the headliner. Refer to Headlining Trim Panel Replacement.