GM Service Manual Online
For 1990-2009 cars only

    Object Number: 183266  Size: SH
  1. Install the engine block coolant drain plug.
  2. Apply gasket paste or equivalent to the plug before installation
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Tighten
    Coolant Jacket Plug to 15 N·m (11 lb ft).


    Object Number: 4904  Size: SH
  4. Install the cooling jacket core plugs.
  5. Apply gasket paste or equivalent to the plugs before installation
  6. Drive the plugs into the block until they are flush using a drift that closely matches the inside diameter of the plug.

  7. Object Number: 183156  Size: SH
  8. Install the front oil passage plug and the engine front cover alignment dowels.
  9. Important: The front oil passage plug is a special type with a lubrication hole for the timing chain.

  10. Do not install any other type of plug in this oil passage.

  11. Object Number: 183260  Size: SH
  12. Install the upper oil passage plug
  13. Apply gasket paste or equivalent to the plug before installation
  14. Tighten
    Oil Passage Plug to 21 N·m (15 lb ft).


    Object Number: 183154  Size: SH
  15. Install the right side oil passage plug.
  16. Apply gasket paste or equivalent to the plug before installation
  17. Tighten
    Oil Passage Plug to 21 N·m (15 lb ft).


    Object Number: 183151  Size: SH
  18. Install the rear oil passage plugs.
  19. Apply gasket paste or equivalent to the plugs before installation
  20. Tighten
    The Large Oil Passage Plug to 33 N·m (24 lb ft).

    Tighten
    The Small Oil Passage Plug to 15 N·m (11 lb ft).


    Object Number: 183264  Size: SH
  21. Install the camshaft rear cover and gasket.
  22. Tighten
    The Camshaft Rear Cover bolts to 12 N·m (106 lb in).