GM Service Manual Online
For 1990-2009 cars only

Disassembly Procedure


    Object Number: 5274  Size: SH
  1. Remove the shaft and retainer.

  2. Object Number: 5275  Size: SH
  3. If necessary, remove the oil pump screen.
  4. • The oil pump screen has a press fit in to the pump cover.
    • Do not remove the screen from the pipe. The pipe and screen are serviced as a complete assembly.

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

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

  8. Object Number: 5278  Size: SH
  9. Remove the drive gear and the driven gear. Matchmark the gear teeth for assembly.

  10. Object Number: 30401  Size: SH
  11. Remove the following items:
  12. • The retaining pin
    • The pressure regulator spring
    • The pressure regulator valve