K 1500 Yukon XL 4WD V8-5.3L VIN T (2001)
21. Remove the heater core clamp.
22. Remove the heater core from the module.
INSTALLATION PROCEDURE
1. Install the heater core to the module.
2. Install the heater core clamp.
3. Install the rear 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.
