Front HVAC Housing Removal and Installation

REMOVAL

WARNING: IF EQUIPPED WITH AIR CONDITIONING, THE REFRIGERATION SYSTEM MUST BE COMPLETELY EMPTY BEFORE PROCEEDING.

1. Set parking brake.
2. Disconnect battery negative cable.

A/C Service Ports:

3. Using a refrigerant recovery machine, remove refrigerant from the A/C system.
4. Remove wiper module.
5. Pinch off rear heater lines if equipped.

Heater Hoses:

6. Drain engine coolant. Remove heater hoses at the heater core Plug coolant lines.

Expansion Valve Plate:

7. Remove suction and liquid lines at the expansion valve.
8. Remove the Instrument Panel Assembly.Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Service Procedures, Instrument Panel Assembly Replacement, Instrument Panel Assembly

9. Remove heater ducts.
10. Disconnect the two upper mounts from the upper reinforcement and the lower mount from the tunnel.

HVAC Bolt-Up:

11. Remove the nuts (in the engine compartment) securing the unit to the dash panel.
12. Disconnect the HVAC housing wiring harness.
13. Pull the entire unit rearward until the studs on the unit clear the dash panel. Drop the unit down. Pull it rearward to remove it from vehicle.

INSTALLATION
1. For installation of the assembly, reverse the above procedures. Install new O-rings on plumbing inlets
2. Evacuate and recharge the A/C system.
3. Perform HVAC control Calibration Diagnostic and Cooldown test. Testing and Inspection