Heater Core: Service and Repair

1. On models equipped with radio coded theft protection system, refer to Vehicle Damage Warnings for system disarming and arming procedures. On models equipped with airbag system, refer to Technician Safety Information for system disarming and arming procedures.
2. Disconnect battery ground cable, then drain cooling system.





3. Snap open cable clip, then disconnect heater valve cable from heater valve.





4. Disconnect heater hoses at heater, then remove heater unit mounting nut from engine compartment side.
5. Remove instrument panel.
6. Remove heat duct or evaporator and steering column bracket.





7. Remove clip, heater mounting nuts and heater assembly.

Fig. 16 Heater Core Removal:

8. Remove heater core cover attaching screws, then the cover, Fig. 16.
9. Remove pipe clamp and damper arm attaching screws.
10. Pull heater core from heater housing. Ensure care is taken not to bend inlet and outlet pipes during removal.
11. Reverse procedure to install, noting the following:
a. Do not interchange inlet and outlet hoses.
b. Connect all cables and ensure they are properly adjusted.
12. On models equipped with radio coded theft protection system, refer to Vehicle Damage Warnings for system disarming and arming procedures. On models equipped with airbag system, refer to Technician Safety Information for system disarming and arming procedures.
13. After refilling cooling system, bleed cooling system.