Heater Core: Service and Repair
Removal and Installation1. Allow the engine to cool. Following all safety precautions and using a thick cloth, turn radiator cap slowly to the first stop. Step back while pressure is released. When the pressure has been released, tighten the radiator cap on the radiator.
2. Disconnect the heater water hoses from the heater core and plug the heater water hoses.
3. In the passenger compartment, remove the instrument panel. Instrument Cluster / Carrier
4. Remove heater air plenum chamber. Housing Assembly HVAC
5. Remove heater core from heater air plenum chamber.
For installation, follow removal procedures in reverse order.