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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1498 (Engine Cooling System) >> Repair Instructions >> Water Pump Replacement (4.2L Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the coolant. Refer to DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 6)   or  DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 3)   .
  2. Remove the fan and shroud. Refer to COOLING FAN AND SHROUD REPLACEMENT   .
  3. Remove the drive belt. Refer to DRIVE BELT REPLACEMENT  in Engine Mechanical - 4.2L.
  4. Using the J 41240  , secure the water pump pulley and remove the water pump pulley bolts.
  5. Remove the J 41240  .
  6. Remove the water pump pulley.
    Fig 1: Removing Water Pump Pulley Bolts & Water Pump Pulley (4.2L Engine)
    G02129821Courtesy of GENERAL MOTORS CORP.
  7. Loosen and remove the water pump bolts.
  8. Remove the water pump.
  9. Clean and inspect the water pump. Refer to WATER PUMP CLEANING AND INSPECTION .
  10. Discard and replace the gasket.
    Fig 2: Removing Water Pump Bolts & Water Pump (4.2L Engine)
    G02129822Courtesy of GENERAL MOTORS CORP.
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