For 1990-2009 cars

### Removal Procedure

1. Remove the left rear wheel liner on the left rear wheel.
2. Remove the trim from the rear compartment left wheelhousing.
3. Reach up behind the quarter panel and release the clips on the pressure release valve.
4. Push the valve into the rear compartment.

### Installation Procedure

1. From inside the rear compartment, position the pressure release valve into the opening.
2. Seat the valve by gently applying force from inside the rear compartment, engaging the clips.
3. Install the rear compartment inner trim.
4. Install the left rear wheel liner.