GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1760676  Size: SH
  1. Remove the instrument panel from the vehicle. Refer to Instrument Panel Assembly Replacement .
  2. Remove the A/C module from the vehicle. Refer to HVAC Module Assembly Replacement
  3. Disconnect the heater hoses from the heater core.
  4. Remove the thermistor wiring harness connector.

  5. Object Number: 1760679  Size: SH
  6. Remove the mode motor ventilation link.

  7. Object Number: 1785541  Size: SH
  8. Remove the heater core side cover with the screws.

  9. Object Number: 1785546  Size: SH
  10. Remove the heater core.

Installation Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1785546  Size: SH
  1. Install the heater core into the case.

  2. Object Number: 1785541  Size: SH
  3. Install the heater core side cover.
  4. Install the tighten the screws that secure the heater core cover to the aircon module.

  5. Object Number: 1760679  Size: SH
  6. Install the mode door ventilation link and screw.

  7. Object Number: 1760676  Size: SH
  8. Connect the thermistor connector.
  9. Connect the heater hoses to the heater core.
  10. Install the A/C module. Refer to HVAC Module Assembly Replacement .
  11. Install the instrument panel. Refer to Instrument Panel Assembly Replacement .