TrailBlazer 2WD L6-4.2L VIN S (2003)
Cabin Ventilation Duct: Service and Repair
Pressure Relief Valve Replacement
Removal Procedure
1. Remove the rear bumper fascia.
2. Using a small flat-bladed tool, apply pressure at two upper locations and two lower locations to release the retainers on the pressure relief valve.
3. Remove the pressure relief valve from the lower quarter panel.
Installation Procedure
1. Install the pressure relief valve to the lower quarter panel.
2. Press the pressure relief valve into the quarter lower panel until the retainers lock into place at the upper and lower locations.
3. Install the rear bumper fascia.
