GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Uplander 🢒 Engine 🢒 Engine Mechanical - 3.9L 🢒 Oil Pump Disassemble

    Object Number: 1557722 Size: SH
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.

    2. Object Number: 1557725 Size: SH

    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.

    3. The oil pump screen has a press fit into the oil pump cover.


    Object Number: 1557726 Size: SH
  3. Remove the oil pump cover bolts.

    4. Object Number: 1557727 Size: SH
  4. Remove the oil pump cover.

    5. Object Number: 1557729 Size: SH
  5. Remove the oil pump drive gear and the oil pump driven gear.
  6. Matchmark the gear teeth for assembly.

    7. Object Number: 1557732 Size: SH

    Caution: Wear safety glasses in order to avoid eye damage.

    Caution: In some models, the pressure regulator valve spring is under pressure. Remove the retaining pin carefully in order to avoid bodily injury.

  7. Remove the following items:
    8. 7.1. The oil pump pressure relief valve spring straight pin
    7.2. The oil pump pressure relief spring

    Caution: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin.

    7.3. The oil pump pressure relief valve--If the valve is stuck, soak the pump housing in cleaning solvent.