Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) .
Remove the air intake tube.
Remove the heater and surge tank hoses from the mounting clip.

Fig 1: Quick Connect Fitting Release Tabs (Plastic Collar)

Courtesy of GENERAL MOTORS CORP.

Squeeze the plastic retainer release tabs.

Fig 2: Pulling Connection Apart

Courtesy of GENERAL MOTORS CORP.

Pull the connection apart.

Fig 3: Inlet Heater Hose At Engine

Courtesy of GENERAL MOTORS CORP.

Remove the outlet heater hose from the water pump.
Reposition the outlet heater hose clamp at the surge tank.
Remove the outlet heater hose from the surge tank.

Fig 4: Inlet And Outlet Heater Hoses

Courtesy of GENERAL MOTORS CORP.

Remove the outlet heater hose.