Heater Core: Service and Repair

REMOVAL

WARNING:
- ON VEHICLES EQUIPPED WITH AIRBAGS. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
- DO NOT OPEN THE RADIATOR DRAIN-COCK OR DISCONNECT COOLANT HOSES WHEN THE SYSTEM IS HOT AND UNDER PRESSURE. SERIOUS BURNS FROM COOLANT CAN OCCUR.

1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to: "Engine, Cooling, and Exhaust : Cooling System : Service and Repair" Service and Repair
3. Evacuate the refrigerant system. Refer to: "Heating and Air Conditioning : Service and Repair" Service and Repair
4. Remove the instrument panel. Refer to: Body and Frame, Interior Tim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Service Procedures, Instrument Panel Assembly Replacement, Instrument Panel Assembly

5. Remove the refrigerant lines from the evaporator connections.
6. Remove the heater core coolant supply hoses from the heater core.
7. Unbolt and remove the HVAC assembly from the vehicle.
8. Disassemble the HVAC housing. Refer to: "Housing Assembly HVAC : Service and Repair" Service and Repair
9. Remove the heater core from the HVAC housing.

INSTALLATION
1. Install the heater core to the HVAC housing.
2. Assemble the HVAC housing.
3. Install the HVAC assembly in to the vehicle.
4. Install the heater core coolant supply hoses to the heater core.
5. Install the refrigerant lines to the evaporator.
6. Install the instrument panel. Refer to: Body and Frame, Interior Tim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Service Procedures, Instrument Panel Assembly Replacement, Instrument Panel Assembly

7. Refill the cooling system.
8. Evacuate the refrigerant system.
9. Recharge the refrigerant system.
10. Connect the negative battery cable.