GM Service Manual Online
For 1990-2009 cars only
  1. Lubricate the gerotor gears with clean engine oil.

  2. Object Number: 33683  Size: SH
  3. Assemble the gerotor in the housing.
  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 to prime the oil pump.

  6. Object Number: 33685  Size: SH
  7. Assemble the pressure relief valve.

  8. Object Number: 33688  Size: SH
  9. Assemble the pump housing to the balance shaft assembly.
  10. Assemble the pump cover to the oil pump housing.