GM Service Manual Online
For 1990-2009 cars only

    Object Number: 187008  Size: SH
  1. Remove the camshaft rear bearing hole plug.

  2. Object Number: 187017  Size: SH
  3. Remove the rear oil gallery plugs (1, 2 , 3).

  4. Object Number: 55266  Size: SH
  5. Remove the front oil gallery plugs (1, 2).
  6. Remove all of the remaining engine block plugs.

  7. Object Number: 187001  Size: SH
  8. Remove the knock sensor.

  9. Object Number: 186993  Size: SH
  10. Remove the engine oil pressure switch.