GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1646801  Size: SH
  1. Remove the instrument panel compartment. Refer to Instrument Panel Compartment Replacement .
  2. Disconnect the electrical connector from the air temperature actuator.
  3. Remove the air temperature actuator screws from the HVAC module.
  4. Remove the air temperature actuator from the HVAC module.

Installation Procedure


    Object Number: 1646801  Size: SH
  1. Align the air temperature actuator with the door shaft and rotate into position.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the air temperature actuator screws to the HVAC module.
  4. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  5. Connect the electrical connector to the air temperature actuator.
  6. Important: Any time an actuator or the HVAC control module is replaced, the HVAC control module must be calibrated to ensure proper air distribution.

  7. Calibrate the actuators. Refer to Actuator Recalibration .
  8. Cycle the ignition and verify proper operation.
  9. Install the instrument panel compartment. Refer to Instrument Panel Compartment Replacement .

Removal Procedure


    Object Number: 1646801  Size: SH
  1. Remove the instrument panel compartment. Refer to Instrument Panel Compartment Replacement.
  2. Disconnect the electrical connector from the air temperature actuator.
  3. Remove the air temperature actuator screws from the HVAC module.
  4. Remove the air temperature actuator from the HVAC module.

Installation Procedure


    Object Number: 1646801  Size: SH
  1. Align the air temperature actuator with the door shaft and rotate into position.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the air temperature actuator screws to the HVAC module.
  4. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  5. Connect the electrical connector to the air temperature actuator.
  6. Note: Any time an actuator or the HVAC control module is replaced, the HVAC control module must be calibrated to ensure proper air distribution.

  7. Calibrate the actuators. Refer to Actuator Recalibration.
  8. Cycle the ignition and verify proper operation.
  9. Install the instrument panel compartment. Refer to Instrument Panel Compartment Replacement.