Heater Core Case: Service and Repair

Fig. 21 Removing Heater Ducts:

1. Disconnect battery ground cable.
2. Drain coolant from radiator.
3. Disconnect heater hoses from firewall.
4. Disconnect heater valve cable from heater valve.
5. Remove heater lower mounting nut.
6. Remove dashboard, then the heater ducts, Fig. 21.

Fig. 22 Removing Air Mix Cable:

7. Disconnect air mix cable from heater, Fig. 22, then heater sub harness from heater wire harness.
8. Disconnect vacuum hoses at tube joint.
9. Remove heater mounting bolts, then pull heater away from body.
10. Reverse procedure to install.