GM Service Manual Online
For 1990-2009 cars only

    Object Number: 412447  Size: SH
  1. Install the drain plug in the water pump.
  2. Apply GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the plug before installation.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the coolant jacket plugs.
  5. Tighten
    Tighten the coolant jacket plug to 35 N·m (26 lb ft).

  6. Install the rear oil passage plugs.
  7. Apply GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the plugs before installation.
  8. Tighten
    Tighten the oil passage plug to 60 N·m (44 lb ft).

  9. Install the other oil passage plugs.
  10. Apply GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the plug before installation.
  11. Tighten
    Tighten the oil passage plugs to 35 N·m (26 lb ft).


    Object Number: 630345  Size: SH
  12. Lubricate the crankshaft position sensor O-ring with engine oil.
  13. Install the crankshaft position sensor and bolt.
  14. Tighten
    Tighten the crankshaft position sensor bolt to 10 N·m (89 lb in).


    Object Number: 630350  Size: SH
  15. Install the oil pressure switch.
  16. Tighten
    Tighten the oil pressure switch to 22 N·m (16 lb ft).


    Object Number: 1977766  Size: SH
  17. Install the knock sensor and bolt.
  18. Tighten
    Tighten the knock sensor bolt to 25 N·m (18 lb ft).


    Object Number: 1594334  Size: SH
  19. Install the piston oil squirters.
  20. Install the piston oil squirter bolts.
  21. Tighten
    Tighten the piston oil squirter bolts to 15 N·m (11 lb ft).