Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Inlet Heater Hose And Auxiliary Water Pump (W/ HP2 Rear)

Courtesy of GENERAL MOTORS CORP.

Install the inlet heater hose (3) to the auxiliary water pump (1).
Position the inlet heater hose clamp (2) to the auxiliary water pump (1).

Fig 2: Identifying Heater Hose To Heater Core Fittings

Courtesy of GENERAL MOTORS CORP.

Connect the inlet heater hose to the heater core.
Firmly push the quick connect onto the heater core pipe until you hear an audible click.
Fill the cooling system. Refer to Draining and Filling Cooling System (with HP2) or Draining and Filling Cooling System (without HP2) in Engine Cooling.