Sierra Classic 2500 4WD V8-6.0L (2007)
6. Install the heater outlet hose to the clip.
7. Install the rear heater inlet hose (3) to the auxiliary water pump (1).
8. Position the rear heater inlet hose clamp (2) to the auxiliary water pump (1).
9. Install the front heater inlet hose (6) to the auxiliary water pump (1).
10. Position the front heater inlet hose clamp (4) to the auxiliary water pump (1).
11. Fill the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (w/RPO HP2) Draining
and Filling Cooling System (Vac-N-Fill).
