GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Vivant 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Conditioning Evaporator Core Replacement

Removal Procedure

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


    Object Number: 1279971 Size: SH
  1. Disconnect the negative battery cable.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the heater/air distributor case assembly. Refer to HVAC Module Assembly Replacement .
  4. Remove the wiring on the heater module.
  5. Disconnect the connectors for the blower motor, the blower resister or power transistor, the air mix door motor, and the mode control motor.
  6. Remove the 5 screws and 2 clips and separate the heater module from the evaporator/blower motor.
  7. Remove the A/C filter.

    8. Object Number: 1279976 Size: SH
  8. Remove the 11 screws and 2 clips that fasten the upper and lower case.
  9. Separate the upper and lower case and remove the evaporator with the expansion valve.

    10. Important: Do not damage the sealing material. If damaged, change with new equivalent material.

  10. Remove the expansion valve.

Installation Procedure

    Object Number: 1279976 Size: SH
  1. Install the expansion valve to the evaporator.
  2. Install the evaporator into the case and seal.
  3. Install the 11 screws and 2 clips that fasten the upper and lower case.

    4. Object Number: 1279971 Size: SH
  4. Install the A/C filter.
  5. Connect the heater module to the evaporator/blower module and install the 5 module screws and 2 clips.
  6. Connect the connectors for the blower motor, the blower resister or power transistor, the air mix door motor, and the mode control motor.
  7. Install the wiring on the heater module.
  8. Install the heater/air distributor case assembly. Refer to HVAC Module Assembly Replacement .
  9. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  10. Connect the negative battery cable.