Evaporator Core Housing
Evaporator Core Housing
Removal and Installation
NOTE: If an evaporator core leak is suspected, the evaporator core must be vacuum-leak tested before it is removed from the vehicle. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.
All vehicles
1. Recover the refrigerant. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.
2. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury Procedures.
Remove the RH fender splash shield. For additional information, refer to Front End Body Panels Fender Splash Shield - RH.
3. Drain the engine coolant. For additional information, refer to Engine Cooling Cooling System Draining, Filling and Bleeding.
4. Remove the 2 lower evaporator core housing nuts.
5. Remove the 2 Evaporative Emission (EVAP) canister purge valve bracket nuts and position the bracket away from the evaporator core housing.
6. Release the 2 heater hose clamps and disconnect the heater hoses from the heater core.
7. NOTE: Blower motor speed control electrical connector shown in exploded view, blower motor resistor electrical connector similar.
Disconnect the blower motor speed control (if equipped) or blower motor resistor (if equipped) electrical connector.
8. Disconnect the evaporator outlet fitting.
- Discard the O-ring seals.
9. Disconnect the evaporator inlet fitting.
- Discard the O-ring seals.
10. Disconnect the blower motor electrical connector.
11. Detach the wire harness pin-type retainer above the blower motor.
12. Detach the wire harness retainer from the evaporator core housing stud.
13. Remove the upper evaporator core housing nut.
Vehicles equipped with Electronic Automatic Temperature Control (EATC)
14. Remove the RH lower instrument panel insulator.
15. Disconnect the in-vehicle temperature sensor aspirator hose from the evaporator housing (if equipped).
All vehicles
16. Remove the RH evaporator core housing bolt.
17. Remove the LH evaporator core housing bolt.
18. Remove the evaporator core housing.
19. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury Description and Operation.
To install, reverse the removal procedure.
- Clean and lubricate the coolant hoses with plain water only if needed.
- Install new O-ring seals.
- Lubricate the refrigerant system with the correct amount of clean PAG oil. For additional information, refer to Climate Control System - General Information and Diagnostics Refrigerant Oil Adding.
20. Fill the engine cooling system. For additional information, refer to Engine Cooling Cooling System Draining, Filling and Bleeding.
21. Evacuate, leak test and charge the refrigerant system. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.