Engine Block Plug Installation

1. Install NEW oil filter bypass valves to the proper depth, if removed.
Stake the area around the bypass valve.





2. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.

NOTICE: Refer to Fastener Notice in Service Precautions.

3. Install the engine block top oil gallery plugs.
^ Tighten the top oil gallery plugs to 20 Nm (15 ft. lbs.).





4. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.
5. Install the engine block rear oil gallery plugs.
^ Tighten the rear oil gallery plugs to 30 Nm (22 ft. lbs.).





6. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.
7. Install the engine block front oil gallery plugs.
^ Tighten the front oil gallery plugs to 30 Nm (22 ft. lbs.).





8. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.
9. Install the engine block left side oil gallery plugs.
^ Tighten the side oil gallery plugs to 30 Nm (22 ft. lbs.).





10. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block oil cooler plugs (without oil cooler).
11. Install the engine block oil cooler plugs (without oil cooler).
^ Tighten the engine block oil cooler plugs to 30 Nm (22 ft. lbs.).





12. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block oil cooler hose fittings (with oil cooler).
13. Install the engine block oil cooler hose fittings (with oil cooler).
^ Tighten the engine block oil cooler hose fittings to 23 Nm (17 ft. lbs.).





14. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block coolant drain hole plug.
15. Install the engine block coolant drain hole plug.
^ Tighten the coolant drain hole plug to 20 Nm (15 ft. lbs.).





16. Apply sealant GM P/N 12346004 or equivalent to the threads of the knock sensors.
17. Install the left knock sensor (1) to the engine block.
^ Tighten the knock sensor to 19 Nm (14 ft. lbs.).

18. Install the right knock sensor (2) to the engine block.
^ Tighten the knock sensor to 19 Nm (14 ft. lbs.).





19. Install the left side knock sensor shield.
20. Install the left side knock sensor shield bolts.
^ Tighten the left side knock sensor shield bolts to 12 Nm (106 inch lbs.).





21. Apply sealant GM P/N 12345493 or equivalent to the engine block camshaft rear bearing hole.
22. Install a NEW camshaft rear bearing hole plug to the proper depth.





23. Apply sealant GM P/N 12345493 or equivalent to the engine block expansion plug holes.
24. Install NEW engine block expansion plugs to the proper depth.
A properly installed expansion plug will be installed until flush or slightly below flush with the face of the block.