GM Service Manual Online
For 1990-2009 cars only

    Object Number: 262427  Size: SH
  1. Lubricate the gears with clean engine oil.
  2. • The oil pump inner gear (2)
    • The oil pump outer gear (1)
    • The inside surface of the oil pump body

    Object Number: 262424  Size: SH
  3. Install the outer gear and the inner gear of the oil pump to the oil pump body.
  4. Notice: Fill oil pump cavities with petroleum jelly prior to installation. This will ensure that there is oil pressure immediately on start-up and will prevent engine damage.

  5. Fill the oil pump with petroleum jelly in order to prime the oil pump.

  6. Object Number: 262403  Size: SH
  7. Install the oil pump cover to the oil pump body. Secure the cover with five screws.
  8. Lubricate and install the pressure relief valve and the spring.