Removal and Installation

SRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS before performing repairs or service.

1. Disconnect the negative cable from the battery.




2. From under the hood, open the clamp, then disconnect the heater valve cable from the heater valve arm. Turn the heater valve arm to the fully opened position as shown.
3. When the engine is cool, drain the engine coolant from the radiator.

WARNING: Do not remove the radiator cap when the engine is hot; the engine coolant is under pressure and could severely scald you.




4. Disconnect the heater hoses from the heater unit.

CAUTION: Engine coolant will damage paint. Quickly rinse any spilled engine coolant from painted surfaces.

NOTE: Engine coolant will run out when the hoses are disconnected; drain it into a clean drip pan.




5. Remove the mounting nut from the heater unit.

NOTE: When removing the mounting nut, take care not to damage or bend the fuel lines, the brake lines, etc.

6. Remove the dashboard.
7. Remove the heater duct or evaporator.




8. Disconnect the connectors from the mode control motor and air mix control motor ('99 - 00 models), then remove the wire harness clips and wire harness from the heater unit. Remove the clip from the heater duct, then remove the two mounting nuts and the heater unit.
9. Install in the reverse order of removal. Make note of the following items.
- Apply sealant to the grommets.
- Do not interchange the inlet and outlet heater hoses. Make sure that the clamps are secure.
- Refill the cooling system with engine coolant.
- Connect all cables, and make sure they are properly adjusted.
- Make sure that there is no air leakage.