Housing Assembly HVAC: Service and Repair

HVAC Module Assembly Replacement

Tools Required
* J 43181 Heater Line Quick Connect Release Tool
* J 39400-A Halogen Leak Detector

Removal Procedure

1. Drain the engine coolant. Refer to Cooling System Draining and Filling (Static Fill) (Service and Repair)Cooling System Draining and Filling (Vac N Fill) (Service and Repair).
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
3. Remove the instrument panel (I/P) carrier. Refer to Instrument Panel Carrier Replacement (Service and Repair).




4. Release the heater hose clamps using J 43181 .
5. Disconnect the heater hose quick connects (2) and (3) from the heater core.




6. Remove the retaining nut from the TXV stud.
7. Remove the evaporator tube and suction hose from the TXV.
8. Remove the radio antenna from the HVAC module.
9. Reposition the carpet.
10. Remove rear floor duct. Refer to Rear Floor Air Outlet Replacement (Rear Floor Air Outlet Replacement).
11. Remove the HVAC module retaining nuts from the cowl.
12. Remove the HVAC module assembly.

Installation Procedure

1. Install the HVAC module assembly.
2. Install the HVAC module retaining nuts from the cowl.

Caution: Refer to Fastener Caution (Fastener Caution).

3. Tighten the HVAC module retaining nuts. Tighten the nut to 4.5 Nm (40 lb in).




4. If replacing the HVAC module assembly (8), transfer the components from the old HVAC module assembly as necessary.
5. Install the HVAC module assembly (8).
6. Install rear floor duct. Refer to Rear Floor Air Outlet Replacement (Rear Floor Air Outlet Replacement).
7. Reposition the carpet.
8. Install the radio antenna to the HVAC module.




9. Connect the heater hose quick connects (2) and (3) to the heater core.
10. Install the evaporator tube and suction hose to the TXV.
11. Install the retaining nut to the TXV stud.
12. Tighten the retaining nut. Tighten the nut to 4.5 Nm (40 lb in).
13. Install the I/P carrier. Refer to Instrument Panel Carrier Replacement (Service and Repair).
14. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
15. Leak test the fittings of the components using the J 39400-A .
16. Refill the engine coolant. Refer to Cooling System Draining and Filling (Static Fill) (Service and Repair)Cooling System Draining and Filling (Vac N Fill) (Service and Repair).