GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Blazer - 4WD - RHD 🢒 Body and Accessories 🢒 Body Rear End 🢒 Pressure Relief Valve Replacement

Removal Procedure
  1. Remove the body side stationary window (2-door only). Refer to Body Side Window Replacement in Stationary Windows.

    2. Object Number: 303139 Size: SH
  2. Remove the molding from the quarter panel rear window (4-door only).

    3. Object Number: 303129 Size: SH
  3. Remove the pressure relief ventilation valve assembly.

    4. Use a flat bladed tool in order to remove the valve from the rear of the cab.

Installation Procedure

    Object Number: 303129 Size: SH
  1. Install the pressure relief ventilation valve assembly.

    2. Firmly press the valve into the rear of the cab.


    Object Number: 303139 Size: SH
  2. Install the molding to the quarter panel rear window (4-door only).
  3. Install the molding fasteners to the quarter panel rear window (4-door only).
  4. Install the body side stationary window (2-door only). Refer to Body Side Window Replacement in Stationary Windows.