Evaporator Core: Service and Repair
EVAPORATOR CORE REPLACEMENTREMOVAL PROCEDURE
1. Remove the HVAC module assembly. Service and Repair
2. Remove the heater core.
3. Remove the heater core case shroud.
4. Remove the screw and evaporator core bracket.
5. Remove the evaporator core.
INSTALLATION PROCEDURE
NOTE: Do not mix refrigerant oils. Use of incorrect refrigerant oil will cause compressor failure.
The CVC compressor uses a low viscosity refrigerant oil, GM P/N 12378526 (Canadian 88900060).
IMPORTANT: If you are installing a NEW evaporator core add the proper quantity of refrigerant oil to the evaporator core. Refer to Refrigerant System Capacities (LA1) or Refrigerant System Capacities (L61).
1. Install the evaporator core.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the evaporator core bracket and screws.
Tighten
Tighten the screws to 1 N.m (9 lb in).
3. Install the heater core case shroud.
4. Install the heater core case shroud screws.
Tighten
Tighten the screws to 1 N.m (9 lb in).
5. Install the heater core.
6. Install the HVAC module assembly.
For a description of the RPO Code(s) shown in this article/image, refer to the RPO Code List found at Vehicle/Application ID.