GM Service Manual Online
For 1990-2009 cars only

    Object Number: 5274  Size: SH
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.

  2. Object Number: 5275  Size: SH

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

  3. Remove the oil pump pipe, if necessary. The oil pump pipe has a press fit into the oil pump cover.

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

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

  8. Object Number: 5278  Size: SH
  9. Remove the oil pump drive gear and the oil pump driven gear.
  10. Matchmark the gear teeth for assembly.
  11. Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 30401  Size: SH
  12. Remove the following items:
  13. 7.1. The oil pump pressure relief valve spring straight pin
    7.2. The oil pump pressure relief spring
    7.3. The oil pump pressure relief valve