GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 Grand Prix 🢒 Body Hardware and Trim 🢒 Interior Trim and Paneling 🢒 Pressure Relief Valve Replacement

Removal Procedure

    Object Number: 318859 Size: SH
  1. Open rear compartment.
  2. Remove the rear bumper fascia. Refer to Rear Bumper Fascia Replacement.
  3. Remove the right side compartment trim panel. Refer to Rear Compartment Side Trim Replacement - Right Side.
  4. Use a small flat-bladed tool in order to release the snaps on the pressure relief valve at the two upper and two lower locations.
  5. Remove the pressure relief valve from the quarter panel.

Installation Procedure

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