Engine Block Plug Installation

1. Apply gasket paste GM P/N 12346004 to the plug.

Notice: Refer to Fastener Notice in Service Precautions.





2. Install the engine block coolant drain plug.
Tighten the coolant jacket plug to 15 Nm (11 ft. lbs.).
3. Apply gasket paste GM P/N 12345493 to the plugs.
4. Install the cooling jacket core plugs.





5. Drive the plugs into the block until they are flush using a drift that closely matches the inside diameter of the plug.
6. Install the front oil passage plug and the engine front cover alignment dowels.
7. Apply gasket paste GM P/N 12346004 to the plug.

Important: The front oil passage plug is a special type with a lubrication hole for the timing chain.

8. Do not install any other type of plug in this oil passage.
9. Apply gasket paste GM P/N 12346004 to the plug.





10. Install the upper oil passage plug.
Tighten the oil passage plug to 21 Nm (15 ft. lbs.).
11. Apply gasket paste GM P/N 12346004 to the plug.





12. Install the right side oil passage plug.
Tighten the oil passage plug to 21 Nm (15 ft. lbs.).
13. Apply gasket paste GM P/N 12346004 to the plugs before installation.





14. Install the rear oil passage plugs.
Tighten the large oil passage plug to 33 Nm (24 ft. lbs.). Tighten the small oil passage plug to 15 Nm (11 ft. lbs.).





15. Install the camshaft rear cover.
Tighten the camshaft rear cover bolts to 12 Nm (106 inch lbs.).