GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1937101  Size: SH
  1. Remove the oil pressure switch (1).

  2. Object Number: 1937092  Size: LH
  3. Remove the bolt (1) and the oil pressure control valve.
  4. Remove the spring (3) and piston (2).
  5. Clean the components.
  6. Inspect the components.
  7. Clean the thread (4).

  8. Object Number: 1945837  Size: SH
  9. Remove the oil pan.
  10. Remove the bolt (1) and the excess pressure valve.
  11. Remove the spring (2) and piston (3).
  12. Clean the components.
  13. Inspect the components.
  14. Clean the thread.

  15. Object Number: 1945758  Size: SH
  16. Disconnect the wiring harness connector (3).
  17. Unclip the wiring harness (2) from the bracket.
  18. Remove the mixture regulator oxygen sensor (1).
  19. Remove the crankshaft pulse pick-up.

  20. Object Number: 1945774  Size: SH
  21. Disconnect the catalytic converter control oxygen sensor wiring harness plug.
  22. Unclip the wiring harness plug (1) from the bracket.
  23. Remove the 2 bolts (3).
  24. Remove the intake manifold support (2).

  25. Object Number: 1945799  Size: SH
  26. Remove the knock sensor wiring harness plug (1).
  27. Remove the knock sensor bolt (2) and the knock sensor.

  28. Object Number: 1945828  Size: SH
  29. Disconnect the wiring harness plug (2).
  30. Unlock the retaining clamp (1).
  31. Remove the coolant temperature sensor.