GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1337190  Size: SH
  1. Remove HVAC module assembly. Refer to HVAC Module Assembly Replacement .
  2. Remove two screws (1) from temperature valve actuator (2).
  3. Remove temperature valve actuator (2) from HVAC module.

  4. Object Number: 1337197  Size: SH
  5. Remove screws from heater core cover (1).
  6. Remove heater core cover (1) from HVAC module.

  7. Object Number: 1337201  Size: SH
  8. Remove heater core clamp screw (1).
  9. Remove heater core (2) from HVAC module.

  10. Object Number: 1337208  Size: SH
  11. Remove front heater core case cover screw (1).
  12. Remove front heater core case cover from HVAC module.

  13. Object Number: 1337211  Size: SH
  14. Remove air temperature door from HVAC module.

Installation Procedure


    Object Number: 1337211  Size: SH
  1. Install air temperature door to HVAC module assembly.

  2. Object Number: 1337208  Size: SH
  3. Install front heater core case cover in HVAC module.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install front heater core case cover screw (1).
  6. Tighten
    Tighten screws to 1 N·m (9 lb in).


    Object Number: 1337201  Size: SH
  7. Install heater core (2) in HVAC module.
  8. Install heater core clamp screw (1).
  9. Tighten
    Tighten heater clamp screw to 1 N·m (9 lb in).


    Object Number: 1337197  Size: SH
  10. Install heater core cover.
  11. Install heater core cover screws.
  12. Tighten
    Tighten heater core case cove screw to 1 N·m (9 lb in).


    Object Number: 1337190  Size: SH
  13. Install temperature valve actuator (2).
  14. Install temperature valve actuator screws.
  15. Tighten
    Tighten temperature valve actuator screws to 2 N·m (18 lb in).

  16. Install HVAC module assembly. Refer to HVAC Module Assembly Replacement .