Suburban 4WD V8-6.0L (2007)
Install the nuts (6) that secure the auxiliary HVAC module to the vehicle.
Tighten the nuts to 9 N.m (80 lb in).
8. Install the air conditioning lines (4, 5) and the nut to the auxiliary HVAC module.
Tighten the nut to 16 N.m (12 lb ft).
9. Install the heater lines (2, 3) to the auxiliary HVAC module at the underside of vehicle.
10. Lower the vehicle.
11. Fill the engine coolant. Refer to Draining and Filling Cooling System (Vac-N-Fill).
12. Recharge the refrigerant to the system. Refer to Refrigerant Recovery and Recharging. See: Service and Repair/Procedures/Refrigerant Recovery
and Recharging
13. Leak test the fittings of the component using the J 39400-A.
