Housing Assembly HVAC: Service and Repair

Heater Core And Evaporator Core Housing





















Removal and Installation

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Vehicle Jacking and Lifting.

2. Recover the refrigerant.

3. Drain the engine cooling system. For additional information, refer to Cooling System &/or Engine Block Heater.

4. Remove the instrument panel. For additional information, refer to Instrument Cluster / Carrier &/or Interior Moulding / Trim.

5. Remove the evaporator drain tube.

6. Release the 2 heater hose clamps and disconnect the 2 heater hoses from the heater core.

7. Remove the 2 Evaporative Emission (EVAP) canister purge valve heat shield pin-type retainers and position the shield aside.

8. Disconnect the evaporator outlet fitting.
- Discard the O-ring seals.

9. Disconnect the evaporator inlet fitting.
- Discard the O-ring seals.

10. Remove the 2 exterior heater core and evaporator core housing nuts.
- To install, tighten to 7 Nm (62 lb-in).

11. Remove the 2 interior heater core and evaporator core housing nuts.
- To install, tighten to 7 Nm (62 lb-in).

12. Remove the heater core and evaporator core housing.

13. To install, reverse the removal procedure.
- Install new O-ring seals.

- Add the correct amount of clean PAG oil to the refrigerant system.

14. Fill the engine cooling system. For additional information, refer to Cooling System &/or Engine Block Heater.

15. Evacuate, leak test and charge the refrigerant system.