Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. 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 (Vac-N-Fill) or 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: Squeezing Quick Connect Fitting Release Tabs (Plastic Collar)

Courtesy of GENERAL MOTORS CORP.

Squeeze the plastic retainer release tabs.

Fig 2: Pulling Connection Apart (Plastic Collar)

Courtesy of GENERAL MOTORS CORP.

Pull the connection apart.

Fig 3: Removing/Installing Heater Hose To Engine

Courtesy of GENERAL MOTORS CORP.

Remove the inlet heater hose from the water pump.

Fig 4: View Of Inlet & Outlet Heater Hoses (LR4, LM7, LQ4)

Courtesy of GENERAL MOTORS CORP.

Remove the inlet heater hose.