Heater Core: Service and Repair
HEATER UNIT/CORERemoval Procedure
I-MARK EXC. FWD
1. Disconnect battery ground cable.
2. Drain cooling system.
3. Disconnect heater hoses at core and plug core tubes to prevent spillage of coolant when removing heater assembly.
4. Remove outer blower unit case cover and disconnect the fresh-air door bowden cable.
5. Disconnect the temperature cable at water valve.
6. Remove steering wheel.
7. Remove instrument cluster.
8. Disconnect wiring for console gauges and remove console retaining screws, shift lever leather and console.
9. Remove heater control and radio face plate.
10. Remove glove box.
11. Remove radio.
12. Disconnect selector mode cable from driver's side of heater unit assembly.
13. Carefully pull the temperature and fresh-air door cables through the cowl and remove control panel through the cluster opening.
14. Remove instrument panel assembly.
15. Remove heater unit assembly through bolt located at the rear and bottom of heater unit assembly.
16. Remove four attaching nuts holding heater unit and blower unit together and remove heater unit assembly.
17. Remove bolts holding heater unit case halves together and the heater core.
18. Reverse procedure to install.