Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Intake Air Tube

Courtesy of GENERAL MOTORS CORP.

Drain the cooling system. Refer to Draining and Filling Cooling System (LL8) or Draining and Filling Cooling System (LM4) .
Loosen the air cleaner outlet duct clamps at the following locations:
- Throttle body
- Mass air flow (MAF)/intake air temperature (IAT) sensor
Remove the air cleaner outlet duct bolt and duct.
Remove the accessory drive belt tensioner. Refer to Drive Belt Tensioner Replacement - Accessory in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
Remove the cooing fan and shroud. Refer to Cooling Fan and Shroud Replacement .

Fig 2: Removing/Installing Inlet Hose From Water Pump

Courtesy of GENERAL MOTORS CORP.

Using J 38185 , reposition the inlet hose clamp at the water pump.
Remove the inlet hose from the water pump.

Fig 3: Removing/Installing Outlet Hose From Water Pump

Courtesy of GENERAL MOTORS CORP.

Using J 38185 , reposition the outlet hose clamp at the water pump.
Remove the outlet hose from the water pump.

Fig 4: View Of Auxiliary Heater Inlet & Outlet Hoses/Pipes

Courtesy of GENERAL MOTORS CORP.

Remove the auxiliary heater inlet and outlet hose/pipe nut.
Using J 38185 , reposition the throttle body hose clamp at the throttle body.
Remove the hose from the throttle body.
Using J 38185 , reposition the auxiliary heater inlet and outlet hose/pipe clamps at the water pump.
Remove the inlet and outlet hoses/pipes from the water pump.

Fig 5: View Of Water Pump, Gaskets & Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the water pump bolts.
Remove the water pump and gaskets.
Discard the water pump gaskets.