Envoy 2WD V8-5.3L VIN M (2005)
Heater Core: Service and Repair
Heater Core Replacement
HEATER CORE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the HVAC module assembly. See: Heating and Air Conditioning/Housing Assembly HVAC/Service and Repair
2. Remove the heater core access cover screws.
3. Remove the heater core access cover.
4. Remove the heater core (2) from the HVAC module assembly (1).
INSTALLATION PROCEDURE
1. Install the heater core (2) to the HVAC module assembly (1).
2. Install the heater core access cover.
3. Install the heater core access cover screws.
Tighten the screws to 1.9 N.m (17 lb in).
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the HVAC module assembly.
