GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Terrain 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Heater Core Replacement

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
  5. Remove the mode motor ventilation link.

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

    7. Object Number: 1785546 Size: SH
  7. 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
  2. Install the heater core side cover.
  3. Install the tighten the screws that secure the heater core cover to the aircon module.

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

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