Avalanche 1500 2WD V8-5.3L (2008)
8. Install the auxiliary heater pipes (1, 2) to the heater inlet and outlet tees (3, 4).
9. Connect the outlet heater hose to the heater core.
10. Connect the inlet heater hose to the heater core.
11. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill).
Heater Inlet Hose Replacement (Non-HP2)
Heater Inlet Hose Replacement (Non-HP2)
Removal Procedure
1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill).
2. Remove the air intake tube.
3. Remove the heater and surge tank hoses from the mounting clip.
4. Squeeze the plastic retainer release tabs.
5. Pull the connection apart.
