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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 688 (Engine Cooling System) >> Repair Instructions >> Water Pump Replacement (4.8L, 5.3L & 6.0L Engines) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Draining & Filling Cooling System .
  2. Loosen the air cleaner outlet duct clamps at the following locations:
    • Throttle body
    • Mass airflow/intake air temperature (MAF/IAT) sensor
  3. Remove the radiator inlet hose clip from the outlet duct.
  4. Remove the air cleaner outlet duct.
    Fig 1: Air Cleaner Outlet Duct
    G01658144Courtesy of GENERAL MOTORS CORP.
  5. If necessary, remove the engine sight shield.
  6. Remove the radiator vent inlet hose from the radiator hose clips.
    Fig 2: Radiator Vent Inlet Hose
    G01658145Courtesy of GENERAL MOTORS CORP.
  7. Reposition the inlet hose clamp at the water pump.
  8. Remove the inlet hose from the water pump.
  9. Remove the fan blade. Refer to Fan Replacement .
  10. Remove the accessory drive belt.
  11. Reposition the outlet hose clamp at the water pump.
  12. Remove the outlet hose from the water pump.
    Fig 3: Outlet Hose From Water Pump
    G01658147Courtesy of GENERAL MOTORS CORP.
  13. Reposition the surge tank outlet hose clamp at the water pump.
  14. Remove the surge tank outlet hose from the water pump.
    Fig 4: Surge Tank Outlet Hose
    G01658148Courtesy of GENERAL MOTORS CORP.
  15. Reposition the heater inlet hose clamp at the water pump.
  16. Remove the heater inlet hose from the water pump.
    Fig 5: Heater Inlet Hose At Water Pump
    G01658149Courtesy of GENERAL MOTORS CORP.
  17. Remove the water pump bolts.
  18. Remove the water pump and gaskets.
  19. Discard the water pump gaskets.
    Fig 6: Water Pump & Gaskets
    G01658150Courtesy of GENERAL MOTORS CORP.
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