K 1500 Suburban 4WD V8-4.8L VIN V (2003)
Tighten
Tighten the nuts to 9 N.m (80 lb in).
14. Install the air conditioning lines (2,3) and the nut (4) to the auxiliary HVAC module.
Tighten
Tighten the nut to 16 N.m (12 lb ft).
15. Install the heater lines (2,3) to the auxiliary HVAC module at the underside of vehicle.
16. Remove the safety stands.
17. Lower the vehicle.
18. Fill the engine coolant.
19. Recharge the refrigerant to the system.
