Envoy 4WD V8-5.3L VIN M (2005)
Evaporator Core: Service and Repair
Evaporator Core - Auxiliary
EVAPORATOR CORE REPLACEMENT - AUXILIARY
TOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Remove the HVAC module assembly. See: Housing Assembly HVAC/Service and Repair
2. Remove the heater core-auxiliary.
3. Remove the inverted TORX studs from the evaporator block-auxiliary.
4. Remove the backing plate (1) from the evaporator core.
5. Remove the screws from the blower motor control processor-auxiliary.
6. Remove the blower motor control processor-auxiliary.
7. Remove the screws from the HVAC module-auxiliary case sump (2).
8. Remove the HVAC module-auxiliary case sump (2).
9. Remove the evaporator core (3) from the HVAC module-auxiliary (1).
10. Carefully remove the foam insulator (2) from around the evaporator core-auxiliary (3).
INSTALLATION PROCEDURE
1. If replacing the evaporator core, add the proper amount of refrigerant oil to the evaporator. Refer to Refrigerant System Capacities for the capacity
information.
