GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 G8 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Valve Actuator Control Module Harness Replacement

Removal Procedure

    Caution: Refer to Safety Glasses Caution in the Preface section.

  1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .

    2. Object Number: 2040981 Size: SH
  2. Disconnect the main mode actuator electrical connector (1).
  3. Disconnect the air mix actuator electrical connector (2).
  4. Disconnect the rear mode actuator electrical connector (3).
  5. Detach the wiring harness (5) from the HVAC module assembly (4).

    6. Object Number: 2040983 Size: SH
  6. Detach the wiring harness (1) from the HVAC module assembly (2).

    7. Object Number: 2040984 Size: SH
  7. Disconnect the evaporator temperature sensor electrical connector (1).

    8. Important: The passenger air mix actuator is only fitted to dual zone (automatic) HVAC module assemblies. Ignore step 8 if working on a single zone  (manual) HVAC equipped vehicle.

  8. Disconnect the passenger air mix actuator electrical connector (2).

    9. Object Number: 2040989 Size: SH
  9. Disconnect the air intake fresh/recirculation actuator electrical connector (1).

    10. Object Number: 2040990 Size: SH

    Important: The single zone HVAC module only has the one connector. The dual zone HVAC module has a two connectors.

  10. Disconnect the HVAC module electrical connectors (3) as required.
  11. Remove the wiring harness (1) from the HVAC module assembly (2).

Installation Procedure

    Object Number: 2040990 Size: SH
  1. Install the wiring harness (1) to the HVAC module assembly (2).

    2. Important: The single zone HVAC module has one connector. The dual zone HVAC module has two connectors.

  2. Connect the HVAC module electrical connectors (3) as required.

    3. Object Number: 2040989 Size: SH
  3. Connect the air intake fresh/recirculation actuator electrical connector (1).

    4. Object Number: 2040984 Size: SH

    Important: The passenger air mix actuator is only fitted to dual zone (automatic) HVAC module assemblies. Ignore step 4 if working on a single zone (manual) HVAC equipped vehicle.

  4. Connect the passenger air mix actuator electrical connector (2).
  5. Connect the evaporator temperature sensor electrical connector (1).

    6. Object Number: 2040983 Size: SH
  6. Attach the wiring harness (1) to the HVAC module assembly (2).

    7. Object Number: 2040981 Size: SH
  7. Attach the wiring harness (5) from the HVAC module assembly (4).
  8. Connect the rear mode actuator electrical connector (3).
  9. Connect the air mix actuator electrical connector (2).
  10. Connect the main mode actuator electrical connector (1).
  11. Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement .