Heater Case Replacement (C69)

REMOVAL PROCEDURE




1. Drain the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.
2. Recover the refrigerant, if equipped with A/C. Refer to Refrigerant Recovery and Recharging.
3. Remove the left rear quarter trim panel.
4. Remove the left rear corner garnish molding.
5. Disconnect the heater air outlet ducts from the auxiliary heater.
6. Disconnect the electrical connectors from the auxiliary heater (1).




7. Raise the vehicle. Support the vehicle with safety stands.
8. Remove the heater and A/C line cover from the underside of the auxiliary heater.
9. Remove the one retaining nut in order to remove the auxiliary evaporator underbody rear tube assembly from the core, if equipped.
10. Disconnect the heater lines from the underside of the auxiliary heater.
11. Remove the retaining nuts from the underside of the auxiliary heater.
12. Remove the safety stands.
13. Lower the vehicle.
14. Remove the auxiliary heater from the vehicle.

INSTALLATION PROCEDURE




1. Install the auxiliary heater into the vehicle.
2. Raise the vehicle. Support the vehicle with safety stands.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Install the retaining nuts to the underside of the auxiliary heater.

Tighten
Tighten the auxiliary heater retaining nuts to 10 N.m (89 lb in).

4. Connect the heater lines to the underside of the auxiliary heater.
5. Install the one retaining nut to the auxiliary evaporator underbody rear tube assembly to the core, if equipped.

Tighten
Tighten the nut to 25 N.m (18 lb ft).

6. Install the heater and heater line cover to the underside of the auxiliary heater.
7. Remove the safety stands.
8. Lower the vehicle.




9. Connect the electrical connectors to the auxiliary heater (1).
10. Install the heater air outlet ducts.
11. Install the left rear corner garnish molding.
12. Install the left rear quarter trim panel.
13. Recharge the refrigerant, if equipped with A/C. Refer to Refrigerant Recovery and Recharging.
14. Fill the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.

For a description of the RPO Code(s) shown in this article/image, refer to the RPO Code List found at Vehicle/Application ID Application and ID