GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the radio. Refer to Radio Replacement .

  2. Object Number: 835770  Size: SH
  3. Remove the center knob from the HVAC control unit
  4. Remove the screw from the control unit.
  5. Remove the center console and heater control trim panel (1).
  6. Remove the electrical connector from the HVAC control unit.

  7. Object Number: 835774  Size: SH
  8. Remove the mode control cable from the HVAC control unit.

  9. Object Number: 835778  Size: SH
  10. Remove the temperature control cable from the HVAC control unit.
  11. Remove the HVAC control unit.
  12. Remove the lamp bulbs from the HVAC control unit.

Installation Procedure


    Object Number: 835778  Size: SH
  1. Install the following to the HVAC control unit:
  2. • The lamp bulbs.
    • The electrical connector
    • The temperature control cable
    • The mode control cable
  3. Install the HVAC control unit to the instrument panel.

  4. Object Number: 835770  Size: SH
  5. Install the center console and heater control trim panel (1). Secure the panel with the screw.
  6. Install the center knob to the HVAC control unit.
  7. Adjust the cables as necessary, refer to the following:
  8. •  Temperature Control Cable Adjustment
    •  Mode Linkage Adjustment
  9. Install the radio. Refer to Radio Replacement .