9-7X V8-5.3L (2005)
Evaporator Core: Service and Repair
Air Conditioning Evaporator Core Replacement
Removal Procedure
1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement (See: Housing Assembly HVAC/Service and Repair).
Important: Some screws are hidden under the foam insulation.
2. Remove the screws to separate the HVAC module assembly halves.
3. Separate the HVAC module assembly (1).
4. Remove the evaporator core (2) from the HVAC module assembly (1).
5. Remove the seal between the HVAC module assembly halves.
Installation Procedure
Important: If replacing the evaporator core, add the refrigerant oil to the evaporator core. Refer to Refrigerant System Capacities (First
Design Compressor) (See: Specifications/Capacity Specifications/Refrigerant System Capacities (First Design Compressor))Refrigerant System
Capacities (Second Design Compressor) (See: Specifications/Capacity Specifications/Refrigerant System Capacities (Second Design
Compressor)) for system capacity information.
1. Install the seal between the HVAC module assembly halves.
2. Install the evaporator core (2) to the HVAC module assembly (1).
Important: Ensure that the seal between the 2 case sections is in place.
3. Assemble the HVAC module assembly.
Notice: Refer to Fastener Notice.
4. Install the screws to join the HVAC module assembly halves.
Tighten the screws to 1.9 Nm (17 in. lbs.).
5. Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement (See: Housing Assembly HVAC/Service and Repair).
