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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 516 (Engine Mechanical - 4.3L (LU3)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Oil Pump Disassemble

Oil Pump Disassemble

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.
    Fig 1: Removing Oil Pump Driveshaft & Retainer
    G01977896Courtesy of GENERAL MOTORS CORP.

    Important:  Do not remove the oil pump screen from the pipe. The pipe and oil pump screen are serviced as a complete assembly.

  2. Remove the oil pump screen, if necessary. The oil pump screen has a press fit into the oil pump cover.
    Fig 2: Removing Oil Pump Screen
    G01977897Courtesy of GENERAL MOTORS CORP.
  3. Remove the oil pump cover bolts.
    Fig 3: Identifying Oil Pump Cover Bolts
    G01977898Courtesy of GENERAL MOTORS CORP.
  4. Remove the oil pump cover.
    Fig 4: Removing Oil Pump Cover
    G01977899Courtesy of GENERAL MOTORS CORP.
  5. Remove the oil pump drive gear and the oil pump driven gear.
  6. Matchmark the gear teeth for assembly.
    Fig 5: Removing Oil Pump Drive Gear
    G01977900Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  7. Remove the following items:
    1. 7.1. The oil pump pressure relief valve spring straight pin
    2. 7.2. The oil pump pressure relief spring
    3. 7.3. The oil pump pressure relief valve
      Fig 6: Removing Oil Pump Pressure Relived Valve, Spring, & Straight Pin
      G01977901Courtesy of GENERAL MOTORS CORP.
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