Suburban 3/4 Ton 2WD V8-6.0L VIN U (2004)
Heater Core: Service and Repair
Heater Core Replacement - Auxiliary
HEATER CORE REPLACEMENT - AUXILIARY
REMOVAL PROCEDURE
1. Remove the auxiliary HVAC module (3) from the vehicle. See: Heating and Air Conditioning/Housing Assembly HVAC/Service and Repair
2. Remove the air temperature actuator (1) from the auxiliary HVAC module.
3. Remove the stud on the underside of the auxiliary HVAC module between the heater core inlet and outlet pipes.
4. Carefully separate the heater core pipe gasket from the module case and remove the heater core pipe retainer.
5. Remove the auxiliary HVAC module lower cover.
