Yukon/Denali 2WD V8-5.3L VIN Z Flex Fuel (2005)
7. Raise the vehicle.
8. Install the nuts (2) that secure the auxiliary HVAC module to the vehicle.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the nuts to 9 Nm (80 lb in).
9. Install the air conditioning lines (2,3) and the nut (4) to the auxiliary HVAC module.
Tighten the nut to 16 Nm (12 lb ft).
10. Install the heater lines (2,3) to the auxiliary HVAC module at the underside of vehicle.
11. Lower the vehicle.
12. Fill the engine coolant.
13. Recharge the refrigerant to the system.
14. Leak test the fittings of the component using the J 39400-A.
