GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Regal 🢒 Body and Accessories 🢒 Body Rear End 🢒 Pressure Relief Valve Replacement

Removal Procedure
  1. Open the rear compartment.
  2. Remove the rear bumper fascia. Refer to Rear Bumper Fascia Replacement .
  3. Pull back the rear compartment trim panel. Refer to Rear Compartment Trim Panel Replacement .
  4. Use a small, flat-bladed tool in order in order to release the snaps on the pressure relief valve. Apply pressure at two upper locations and two lower locations.

    5. Object Number: 318859 Size: SH
  5. Remove the pressure relief valve from the lower quarter panel.

Installation Procedure

    Object Number: 318859 Size: SH
  1. Install the pressure relief valve to the lower quarter panel.
  2. Press the pressure relief valve into the quarter lower panel until the snaps lock into place at the upper and lower locations.
  3. Pull back the rear compartment trim panel. Refer to Rear Compartment Trim Panel Replacement .
  4. Install the rear bumper fascia. Refer to Rear Bumper Fascia Replacement .
  5. Close the rear compartment.