GM Service Manual Online
For 1990-2009 cars only

Auxiliary Heater and Air Conditioning Control Replacement - Front Front Overhead Control A/C Only

Removal Procedure


    Object Number: 612493  Size: SH
  1. Remove the console roof screw.
  2. Support the console and remove the console from the headliner.
  3. Disconnect the electrical connectors.
  4. Remove the console from the vehicle.
  5. Remove the HVAC control assembly from the console.

Installation Procedure


    Object Number: 612493  Size: SH
  1. Install the HVAC control assembly to the console.
  2. Connect the electrical connectors.
  3. Install the console to the headliner.
  4. Install the console roof screw.
  5. Calibrate the HVAC module actuators. Refer to Actuator Recalibration in HVAC Systems - Automatic.

Auxiliary Heater and Air Conditioning Control Replacement - Front Front Overhead Control Heat and A/C

Removal Procedure


    Object Number: 612477  Size: SH
  1. Remove the console roof screw.
  2. Support the console and remove the console from the headliner.
  3. Disconnect the electrical connectors.
  4. Remove the console from the vehicle.
  5. Remove the HVAC control assembly from the console (1).

Installation Procedure


    Object Number: 612477  Size: SH
  1. Install the HVAC control assembly to the console.
  2. Connect the electrical connectors.
  3. Install the console to the headliner.
  4. Install the console roof screw.
  5. Calibrate the HVAC module actuators. Refer to Actuator Recalibration in HVAC Systems - Automatic.