HVAC Module Assembly Replacement - Auxiliary

HVAC MODULE REPLACEMENT - AUXILIARY

TOOLS REQUIRED
J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Drain the cooling system. Refer to Draining and Filling Cooling System (LL8) Draining and Filling Cooling System (LM4) in Cooling System.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.




4. Remove the nuts (3) from rear A/C line block fittings.
5. Remove the A/C line block fittings and discard the O-ring seals.

IMPORTANT: Cap or tape the open A/C refrigerant lines immediately.




6. Remove the nuts from the heater hoses block fittings.
7. Remove the heater hoses block fittings from the HVAC module-auxiliary.
8. Remove the nuts from the HVAC module studs.
9. Lower the vehicle.
10. Remove the right side rear quarter trim.




11. Disconnect the electrical connectors from the HVAC module.
12. Disconnect the rear compartment air outlet ducts (5) from the HVAC module (3).




13. Remove the mounting bolts (5) from the HVAC module.
14. Remove the HVAC module (1).
15. Remove and discard the HVAC module pass through seal.

INSTALLATION PROCEDURE
1. Install new HVAC module pass through seal.




2. Install the HVAC module (1).
3. Install the HVAC module mounting bolts (5).

Tighten the bolts to 10 N.m (89 lb in).

NOTE: Refer to Fastener Notice in Service Precautions.




4. Install the air outlet ducts (5).
5. Connect the electrical connectors.
6. Install the right side rear quarter trim panel.
7. Raise and support the vehicle.




8. Connect the heater hoses to the heater core.
9. Install the nuts to the HVAC module studs.

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

10. Remove the cap or tape from the A/C lines.
11. Install the new O-ring seals.




12. Install the nuts (3) to the evaporator core studs.

Tighten the nuts to 20 N.m (15 lb ft).

13. Lower the vehicle.
14. Fill the cooling system. Refer to Draining and Filling Cooling System (LL8) Draining and Filling Cooling System (LM4) in Cooling System.
15. Evacuate and charge the system. Refer to Refrigerant Recovery and Recharging.
16. Leak test the fittings of the components using the J 39400-A.