GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 163250  Size: SH
  1. Remove the rear fascia. Refer to Rear Bumper Fascia Replacement in Bumpers.
  2. Open the rear compartment stowage/CD player door (3).

  3. Object Number: 153321  Size: SH
  4. Remove the rear quarter relief valve:
  5. • Push in the clips.
    • Remove the valve through the exterior of the vehicle.

Installation Procedure


    Object Number: 153321  Size: SH
  1. Install the rear quarter relief valve:
  2. • Install the valve with the rubber flaps facing downward in order to prevent water intrusion.
    • Inspect that the tabs are fully seated.

    Object Number: 163250  Size: SH
  3. Close the rear compartment stowage/CD player door (3).
  4. Install the rear fascia. Refer to Rear Bumper Fascia Replacement in Bumpers.