Heater Core: Service and Repair

REMOVAL
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.
1. Disconnect battery negative remote cable.
2. Remove instrument panel. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Assembly Replacement, Instrument Panel Assembly

3. Drain coolant.
4. Remove heater hoses at cowl.
5. Remove heater A/C unit housing.

Fig.14 Heater Core Housing:

6. Remove heater core cover screws and cover.

Fig.15 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 (if removed).
4. Install instrument panel. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel Assembly Replacement, Instrument Panel Assembly

5. Fill coolant to level.
6. Reconnect battery negative cable.