45. Engine Block Plug Installation

1. Apply gasket paste GM P/N 12346004 to the plug.
2. Install the engine block coolant drain plug.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the coolant jacket plug.

- Tighten the coolant jacket plug to 30 Nm (22 ft. lbs.).





4. Apply gasket paste GM P/N 12346004 to the plug.
5. Install the timing chain tensioner gallery oil passage plug.

- Tighten the oil passage plug to 20 Nm (15 ft. lbs.).





6. Apply gasket paste GM P/N 12346004 to the plug.
7. Install the rear oil passage plug.

- Tighten the oil passage plug to 10 Nm (89 inch lbs.).





8. Apply gasket paste GM P/N 12346004 to the plug.
9. Install the front oil passage plug.

- Tighten the oil passage plug to 30 Nm (22 ft. lbs.).





10. Apply gasket paste GM P/N 12346004 to the plug.
11. Install the right side oil passage plug.

- Tighten the oil passage plug to 20 Nm (15 ft. lbs.).





12. Install a new oil flow check valve in the oil passage for the cylinder head.
13. Drive the check valve in until the valve is flush with the cylinder block head gasket surface.