GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 683118  Size: SH
  1. Remove the center console trim bezel. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.
  2. Remove the 3 knobs by pulling the knobs away from the HVAC control unit.
  3. Remove the 2 screws and pull the HVAC control unit forward.
  4. Remove the 2 screws and move the defogger and air inlet control switch to the side.
  5. Remove the 2 illumination bulbs.
  6. Disconnect the blower speed switch electrical connector.
  7. Disconnect the A/C switch electrical connector.
  8. Remove the bezel with the A/C switch from the HVAC control unit.
  9. Remove the two screws and the blower speed switch from the HVAC control unit.

Installation Procedure


    Object Number: 683118  Size: SH
  1. Install the blower speed switch to the HVAC control unit. Secure the blower speed switch with the 2 screws.
  2. Install the illumination bulbs.
  3. Install the bezel with the A/C switch to the HVAC control unit.
  4. Connect the A/C switch electrical connector.
  5. Connect the blower speed switch electrical connector.
  6. Install the defogger and air inlet control switch. Secure with the 2 screws.
  7. Install the HVAC control unit to the instrument panel. Secure with the two screws.
  8. Install the 3 knobs.
  9. Install the center console trim bezel. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.