GM Service Manual Online
For 1990-2009 cars only

    Caution: Refer to Safety Glasses Caution in the Preface section.


    Object Number: 1241648  Size: SH
  1. Clean the oil pump and the engine block gasket mating surfaces.
  2. Remove the safety relief valve bolt.
  3. Remove the safety relief valve and the spring.
  4. Remove the oil pump-to-crankshaft seal.

  5. Object Number: 1241650  Size: SH
  6. Remove the oil pump rear cover bolts.
  7. Remove the rear cover.
  8. Clean the oil pump housing and all of the parts.
  9. Inspect all of the parts for signs of wear. Refer to Engine Mechanical Specifications .
  10. Coat all of the oil pump parts with clean engine oil.
  11. Reinstall all of the oil pump parts.
  12. Notice: Refer to Fastener Notice in the Preface section.

    Important: Pack the oil pump gear cavity with petroleum jelly to ensure an oil pump prime. Failure to do this can damage the engine.

  13. Install the oil pump rear cover and the bolts.
  14. Tighten
    Tighten the oil pump rear cover bolts to 6 N·m (53 lb in).

  15. Install the safety relief valve, the spring, the washer, and the bolt.
  16. Tighten
    Tighten the oil pump safety relief valve bolt to 30 N·m (22 lb ft).