GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1997 🢒 Trans Sport 🢒 Engine 🢒 Engine Mechanical - 3.1L and 3.4L 🢒 Oil Pump Disassemble
  1. Drain the oil from the oil pump.

    2. Object Number: 5274 Size: SH
  2. Remove the drive shaft.

    3. Important: Do not remove the pickup tube from the cover unless the pickup tube is loose or broken.


    Object Number: 5276 Size: SH
  3. Remove the oil pump cover bolts.

    4. Object Number: 5277 Size: SH
  4. Remove the oil pump cover.

    5. Object Number: 5278 Size: SH
  5. Remove the oil pump gears.

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


    Object Number: 5279 Size: SH
  6. Remove the pressure regulator valve components in the following order:
    7. 6.1. Remove the cotter pin.
    6.2. Remove the spring.

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

    6.3. Remove the pressure regulator valve. If the valve is stuck, soak the pump housing in carburetor cleaning solvent.