Heater Inlet Hose Replacement (Pump to Heater Core-HP2)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Heater Inlet Hose (Pump to Heater Core-HP2)

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) . Remove the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement . Remove the air cleaner. Refer to Air Cleaner Assembly Replacement . Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
1	Heater Inlet Hose Quick Disconnect Procedure Squeeze the plastic retainer release tabs and pull the connection apart. The joint should audibly click upon reassembly and the technician should pull back on the joint to ensure it's engaged properly.
2	Heater Inlet Hose Clamp Procedure Using J-38185 hose clamp pliers reposition the heater hose clamps at pump. Special Tools J-38185 Hose Clamp Pliers
3	Heater Inlet Hose