Yukon XL 2500 2WD V8-8.1L VIN G (2004)
5. Install the radiator outlet hose to the radiator. Refer to.
6. Connect the heater and surge tank hoses to the heater core.
Important: Firmly push the quick connect onto the heater core pipe until you hear an audible click.
7. Pull the heater outlet hose to ensure the connection.
8. Install the heater and surge tank hoses to the mounting clip.
9. Fill the cooling system.