Removal and Replacement

HVAC HOUSING

REMOVAL
1. Remove negative battery cable.

2. Recover refrigerant from A/C system with R134a refrigerant recovery machine. Service and Repair

3. Drain the engine cooling system.
4. Remove heater hoses from heater core.

NOTE: Plug core tubes to prevent antifreeze from spilling on vehicle interior during removal.

5. Remove quick connect clips from A/C lines at the expansion valve.
6. Remove A/C lines from expansion valve.
7. Remove expansion valve mounting bolts and remove valve.

NOTE: Cap the A/C lines and evaporator to prevent moisture from entering the refrigerant system.

8. Remove floor console. Service and Repair

9. Remove rear heat ducts.
10. Remove nuts securing HVAC housing to dash panel under the hood.

11. Remove the instrument panel and HVAC housing as an assembly. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Service Procedures, Service and Repair

12. Disconnect HVAC wiring connect from left side of the housing.
13. Remove nuts mounting HVAC housing to dash panel.

INSTALLATION
1. Align HVAC housing with instrument panel and install mounting nuts.
2. Make sure the defrost, demist and lower center panel ducts are lined up and or properly connected with the HVAC outlets.
3. Connect HVAC wiring harness
4. Make sure the drain tube and evaporator seals are properly seated to the HVAC housing before installing the Instrument Panel and HVAC assembly into the vehicle.

5. Install instrument panel and HVAC housing assembly. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Service Procedures, Service and Repair

6. Install nuts securing HVAC housing to dash panel under the hood.
7. Install rear heat ducts.

8. Install floor console. Service and Repair

9. Install expansion valve and tighten mounting bolts.

10. Install A/C lines to expansion valve with new O-rings.
11. Install quick connect clips to A/C lines.
12. Install heater hoses to heater core.
13. Install negative battery cable.
14. Fill engine cooling system.

15. Evacuate and charge A/C system with R134a refrigerant recovery machine.