Yukon/Denali XL 1500 4WD V8-5.3L VIN T (2004)
6. Remove the heater core clamp.
7. Remove the heater core from the auxiliary HVAC module.
INSTALLATION PROCEDURE
1. Install the heater core to the auxiliary HVAC module.
2. Install the heater core clamp.
3. Install the auxiliary HVAC module lower cover.
4. Install the heater core pipe retainer and gasket.
5. Install the stud between the heater core inlet and outlet on the underside of the rear HVAC module.
6. Install the air temperature actuator (1) to the auxiliary HVAC module.
7. Install the auxiliary HVAC module assembly (3) to the vehicle.