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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 905 (Engine Mechanical - 2.2L (LN2)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pump Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine oil pan. Refer to OIL PAN REPLACEMENT  .
  2. Remove the oil pump drive bolt.
  3. Remove the oil pump drive. Do this by lifting and turning the oil pump drive.
    Fig 1: Removing Oil Pump Drive
    G01977042Courtesy of GENERAL MOTORS CORP.
  4. Remove the bolt that attaches the oil pump to the rear main bearing cap.
  5. Remove the oil pump.
    Fig 2: Removing Oil Pump
    G01977043Courtesy of GENERAL MOTORS CORP.
  6. Remove the oil pump drive shaft.

    Important:  Do not crack the oil pump drive shaft retainer.

  7. Remove the oil pump drive shaft retainer.
    Fig 3: Removing Oil Pump Drive Shaft
    G01977044Courtesy of GENERAL MOTORS CORP.

    Important:  A loose oil pump tube can cause an air leak and a loss of oil pressure.

  8. Inspect the oil pump pickup tube for looseness.
  9. Clean and inspect the oil pump. Refer to OIL PUMP CLEANING AND INSPECTION  .
  10. Inspect the mating surfaces between the engine and the oil pump.

    It must be clean and free of burrs.

    Fig 4: Inspecting Oil Pump Pickup Tube For Looseness
    G01977045Courtesy of GENERAL MOTORS CORP.
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