Avalanche 2500 4WD V8-8.1L VIN G (2003)
2. Install the inlet heater hose (1) to the engine coolant inlet fitting.
3. Connect the heater and surge tank hose to the heater core.
Firmly push the quick connect onto the heater core pipe until you hear an audible click.
4. Install the heater and surge tank hose to the mounting clip.
5. Install the air intake tube.
6. Fill the cooling system.
