Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
Heater Core: Service and Repair
Heater Core Replacement - Visteon
HEATER CORE REPLACEMENT (VISTEON)
REMOVAL PROCEDURE
1. Remove the HVAC module assembly. See: Housing Assembly HVAC/Service and Repair
2. Remove the screws from the heater core cover.
3. Remove the heater core cover (1) from the HVAC module assembly (2).
4. Remove the heater core cowl gasket (1) from the heater core (2).
5. Remove the heater core (1) from the HVAC module assembly (2).