GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1579176  Size: SH

    Important: There are no serviceable components within the oil pump. Disassemble the pump only to diagnose an oiling concern. A disassembled oil pump must not be reused. A disassembled oil pump must be replaced.

  1. Remove the oil pump mounting bolts.

  2. Object Number: 1579177  Size: SH
  3. Remove the primary camshaft drive chain lower guide bolts.
  4. Remove the primary camshaft drive chain lower guide.

  5. Object Number: 1579178  Size: SH
  6. Remove the bolts holding the oil pump cover to the oil pump housing.

  7. Object Number: 1579180  Size: SH
  8. Remove the oil pump cover from the oil pump housing.

  9. Object Number: 1579181  Size: SH
  10. Remove the inner oil pump drive gear.
  11. Remove the outer oil pump driven gear.

  12. Object Number: 1579182  Size: SH
  13. Remove the clip, holding the cap, for the oil relief valve components.
  14. Remove the cap, spring, and plunger from the oil pump housing.