Heater Core: Service and Repair

Fig 34 Heater Core Housing:

NOTE: The heater core is serviceable inside the vehicle. However, if the core has leaked a significant amount of coolant, the A/C housing must be removed. The housing should be disassembled and cleaned thoroughly before heater core replacement. If housing removal is necessary, refer to Air Flow Control Box - Heater, Removal and Installation.


REMOVAL
1. Disconnect battery negative remote cable.
2. Remove instrument panel.
3. Drain coolant.
4. Remove heater hoses at cowl.
5. Remove heater A/C unit housing.
6. Remove heater core cover screws and cover.

Fig 35 Heater Core Removal:

7. Remove heater core.

INSTALLATION
1. Carefully install new heater core into the heater housing.
2. Fasten heater core cover to housing with screws provided.
3. Install heater A/C unit housing.
4. Install instrument panel.
5. Fill coolant to level.
6. Reconnect battery.