Heater-Evaporator Unit Replacement

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

1. Make sure you have the anti-theft code for the radio, then write down the frequencies for the radio's preset buttons.
2. Disconnect the negative cable from the battery.




3. Open the cable clamp, then disconnect the heater valve cable from the heater valve arm. Turn the heater valve arm to the fully opened position as shown.
4. 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.




5. 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.

6. Remove the dashboard.




7. Remove the mounting bolts from the left side of steering hanger beam.




8. Remove the mounting bolt and the mounting nuts from the right side of the steering hanger beam, then remove the steering hanger beam.
9. Remove the evaporator/blower unit.




10. Remove the clips and the heater duct.




11. Remove the bolt and the cruise control unit. Disconnect the connectors from the mode control motor and the air mix control motor, then remove the clips and the A/C wire harness. Remove the mounting bolt, the mounting nuts and the heater unit.
12. 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 the heater valve cable, and make sure that it is properly adjusted.
- Make sure that there is no air leakage.
- The PCM memory must be reset after reconnecting the battery.
- Enter the anti-theft code for the radio, then enter the customer's radio station presets.