Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Loosen the air cleaner outlet duct clamp at the mass airflow/intake air temperature sensor.

Fig 1: Air Cleaner Outlet Duct & Clamp
Courtesy of GENERAL MOTORS CORP.
Remove the positive crankcase ventilation (PCV) hose.

Fig 2: Remove Positive Crankcase Ventilation (PCV) Hose
Courtesy of GENERAL MOTORS CORP.
Remove the air cleaner adapter nut.

Fig 3: Remove Air Cleaner Adapter Nut
Courtesy of GENERAL MOTORS CORP.
In order to remove the air cleaner outlet duct, pivot the duct upward until the hinge clip release from the lip on the throttle body.
Drain the cooling system. Refer to Draining and Filling Cooling System .
Remove the cooling fan. Refer to Fan Replacement .
Remove the drive belt. Refer to DRIVE BELT ROUTING .

Fig 4: Remove Air Cleaner Outlet Duct
Courtesy of GENERAL MOTORS CORP.
Reposition the radiator outlet hose clamps at the surge tank and water pump.
Remove the radiator outlet hose from the surge tank.
Remove the radiator outlet hose from the water pump.

Fig 5: Remove Radiator Outlet Hose
Courtesy of GENERAL MOTORS CORP.
Reposition the water pump inlet hose clamps.
Remove the water pump inlet hose.

Fig 6: Water Pump Inlet Hose & Clamps
Courtesy of GENERAL MOTORS CORP.
Using J 41240, hold the water pump pulley, remove the water pump pulley bolts.

Fig 7: Remove Water Pump Pulley Bolts Using J 41240
Courtesy of GENERAL MOTORS CORP.
Remove the water pump bolts.
Remove the water pump.
Remove and discard the water pump gaskets.
Clean and inspect the water pump, if necessary. Refer toINSPECTION .

Fig 8: Remove Water Pump, Gaskets & Bolts
Courtesy of GENERAL MOTORS CORP.