57. Engine Block Plug Installation

Engine Block Plug Installation (C/K/G/C350OHD)

- Tools Required
- J 41712 Oil Pressure Sending Unit Socket

Notice: Refer to Fastener Notice in Service Precautions.





1. Apply sealant GM P/N 12346004 or equivalent to the threads of the coolant hole plug.
2. Install the engine coolant hole plug into the block.
- Tighten the engine coolant hole plug to 60 Nm (40 ft. lbs.).





3. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block heater (if applicable).
4. Install the engine block heater into the block.
- Tighten the engine block heater to 50 Nm (37 ft. lbs.).





5. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.
6. Install the engine block top oil gallery plugs.
- Tighten the top oil gallery plugs to 20 Nm (15 ft. lbs.).





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





9. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.
10. Install the front oil gallery plugs.
- Tighten the front oil gallery plugs to 30 Nm (22 ft. lbs.).





11. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil gallery plugs.
12. Install the rear oil gallery plugs.
- Tighten the rear oil gallery plugs to 30 Nm (22 ft. lbs.).





13. Apply sealant GM P/N 12345493 or equivalent to the threads of the engine block oil cooler hose fittings.
14. Install the engine block oil cooler hose fittings.
- Tighten the engine block oil cooler hose fittings to 23 Nm (17 ft. lbs.).





Important: Do not overtighten the knock sensor.

15. Install the left knock sensor to the engine block.
- Tighten the left knock sensor to 20 Nm (15 ft. lbs.).





16. Install the left side knock sensor shield.
17. Install the left side knock sensor shield bolts.
- Tighten the left side knock sensor shield bolts to 12 Nm (106 inch lbs.).





Important: Do not overtighten the knock sensor.

18. Install the right knock sensor to the engine block.
- Tighten the right side knock sensor to 20 Nm (15 ft. lbs.).





19. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block coolant drain hole plugs.
20. Install the engine block coolant drain hole plugs.
- Tighten the coolant drain hole plugs to 30 Nm (22 ft. lbs.).





21. Apply sealer GM P/N 12377901 to the outside diameter of the new camshaft rear bearing hole plug.





22. Install the NEW camshaft rear bearing hole plug to the proper depth of (A) 7.600 - 6.200 mm (0.299 - 0.244 inch).





23. Apply sealant GM P/N 12346004 or equivalent to the threads of the oil pressure sensor.
24. Install the oil pressure sensor.
Using the J 41712, tighten the oil pressure sensor to 30 Nm (22 ft. lbs.).