K 1500 Yukon 4WD V8-5.3L VIN Z Flex Fuel (2003)
INSTALLATION PROCEDURE
1. Install the inlet heater hose.
2. Install the inlet heater hose (1) to the water pump.
3. Connect the heater and surge tank hose to the heater core.
IMPORTANT: 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.
