GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Roof 🢒 Sunroof Drain Hose Replacement

Removal Procedure
  1. Lower the headliner in order to access the drain hose connections. Refer to Headlining Trim Panel Replacement in Interior Trim.
  2. Remove the clamp and the drain hose from the drain spout.
  3. Remove the interior moldings in order to access the drain hose retaining clips. Refer to Windshield Pillar Garnish Molding Replacement and Sail Panel Replacement in Interior Trim.
  4. Remove the tape from the drain hose.

    5. Object Number: 258852 Size: SH
  5. Remove the front drain hose (1) from the retaining clips.

    6. Object Number: 258856 Size: SH
  6. Remove the rear upper drain hose (1) from the retaining clips.
  7. Remove the rear compartment trim panel. Refer to Rear Compartment Trim Panel Replacement in Body Rear End.

    8. Object Number: 258860 Size: SH
  8. Remove the rear lower drain hose  from the retaining clips.

Installation Procedure

    Object Number: 258860 Size: SH
  1. Clip the rear lower drain hose (1) into position.
  2. Install the rear compartment trim panel. Refer to Rear Compartment Trim Panel Replacement in Body Rear End.

    3. Object Number: 258856 Size: SH
  3. Clip the rear upper drain hose  into position.

    4. Object Number: 258852 Size: SH
  4. Clip the front drain hose (1) into position.
  5. Install the interior moldings. Refer to Windshield Pillar Garnish Molding Replacement and Sail Panel Replacement in Interior Trim.

    6. Important: When installing the drain hose clamps, position the clamps in order to maintain clearance between the clamps and the headliner.

  6. Install the drain hose to the drain spout.

    7. Notice: Use care when removing and installing the headliner. If reusing the headliner lay the headliner down flat on a clean surface. Excessive bending will damage the headliner.

  7. Install the headliner to the roof. Refer to Headlining Trim Panel Replacement in Interior Trim.