GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Air ventilation is supplied through a grille panel and an HVAC module. The grille panel and HVAC module are in the cowl area. Air passes through the body and exits through the pressure relief valve. The pressure relief valve is in the rear compartment. Refer to Pressure Relief Valve Replacement in Body Rear End.

  1. Remove the wiper arm assemblies. Refer to Windshield Wiper Arm Replacement in Wipers/Washer System.

  2. Object Number: 255960  Size: SH
  3. Remove the retainers (3, 4).
  4. Remove the washer hoses (2).
  5. Remove the air inlet grille panel (1).

Installation Procedure


    Object Number: 255960  Size: SH
  1. Install the washer hoses (2).
  2. Install the air inlet grille panel (1).

  3. Object Number: 261745  Size: SH

    Important: Install the retainers in the numerical sequence indicated.

  4. Install the retainers (3, 4).
  5. Install the wiper arm assemblies. Refer to Windshield Wiper Arm Replacement in Wipers/Washer System.