Sierra Classic 2500 4WD V8-8.1L (2007)
5. Connect the heater and surge tank hoses to the heater core.
Firmly push the quick connect onto the heater core pipe until you hear an audible click.
6. Install the radiator outlet hose to the radiator. Refer to Radiator Hose Quick Connect Fitting.
7. 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).
