STS V8-4.6L VIN A (2005)
2. Press inward on the pressure relief valve until fully seated.
3. Install the rear bumper fascia. Refer to Fascia, Bracket, Bar, Absorber Replacement - Rear Bumper (See: Bumper/Rear Bumper/Rear Bumper
Cover / Fascia/Service and Repair) in Bumpers.