Engine Block Plug Installation C/K/G/C3500HD

Tools Required

J 41712 Oil Pressure Sending Unit Socket

1. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the coolant hole plug.

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.

2. Install the engine coolant hole plug into the block.

Tighten
Tighten the engine coolant hole plug to 60 N·m (40 lb ft).




3. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the engine block heater, if applicable.
4. Install the engine block heater into the block.

Tighten
Tighten the engine block heater to 50 N·m (37 lb ft).




5. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plugs.
6. Install the engine block top oil gallery plugs.

Tighten
Tighten the top oil gallery plugs to 20 N·m (15 lb ft).




7. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plug.
8. Install the engine block left side oil gallery plug.

Tighten
Tighten the left oil gallery plug to 30 N·m (22 lb ft).




9. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plugs.
10. Install the front oil gallery plugs.

Tighten
Tighten the front oil gallery plugs to 30 N·m (22 lb ft).




11. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plugs.
12. Install the rear oil gallery plugs.

Tighten
Tighten the rear oil gallery plugs to 30 N·m (22 lb ft).




13. Apply thread adhesive GM P/N United States 12345493, GM P/N Canada 10953488, or equivalent to the threads of the engine block oil cooler hose fittings.
14. Install the engine block oil cooler hose fittings.

Tighten
Tighten the engine block oil cooler hose fittings to 23 N·m (17 lb ft).





Important: Do not overtighten the knock sensor.

15. Install the left knock sensor to the engine block.

Tighten
Tighten the left knock sensor to 20 N·m (15 lb ft).




16. Install the left side knock sensor shield.
17. Install the left side knock sensor shield bolts.

Tighten
Tighten the left side knock sensor shield bolts to 12 N·m (106 lb in).





Important: Do not overtighten the knock sensor.

18. Install the right knock sensor to the engine block.

Tighten
Tighten the right side knock sensor to 20 N·m (15 lb ft).




19. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the engine block coolant drain hole plugs.
20. Install the engine block coolant drain hole plugs.

Tighten
Tighten the coolant drain hole plugs to 30 N·m (22 lb ft).




21. Apply sealer GM P/N United States 12377901, GM P/N Canada 10953504, 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 in).



23. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil pressure sensor.
24. Install the oil pressure sensor.

Tighten
Using the J 41712 , tighten the oil pressure sensor to 30 N·m (22 lb ft).

Engine Block Plug Installation Medium Duty

Tools Required

J 41712 Oil Pressure Sending Unit Socket

1. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the coolant hole plug.

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.

2. Install the engine coolant hole plug into the block.

Tighten
Tighten the engine coolant hole plug to 60 N·m (40 lb ft).




3. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the engine block heater, if applicable.
4. Install the engine block heater into the block.

Tighten
Tighten the engine block heater to 50 N·m (37 lb ft).




5. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plugs.
6. Install the engine block top oil gallery plugs.

Tighten
Tighten the top oil gallery plugs to 20 N·m (15 lb ft).




7. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plug.
8. Install the engine block left side oil gallery plug.

Tighten
Tighten the left oil gallery plugs to 30 N·m (22 lb ft).




9. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plugs.
10. Install the front oil gallery plugs.

Tighten
Tighten the front oil gallery plugs to 30 N·m (22 lb ft).




11. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil gallery plugs.
12. Install the rear oil gallery plugs.

Tighten
Tighten the rear oil gallery plugs to 30 N·m (22 lb ft).




13. Apply thread adhesive GM P/N United States 12345493, GM P/N Canada 10953488, or equivalent to the threads of the engine block oil cooler hose fittings.
14. Install the engine block oil cooler hose fittings.

Tighten
Tighten the engine block oil cooler hose fittings to 23 N·m (17 lb ft).





Important: Do not overtighten the knock sensor.

15. Install the left knock sensor to the engine block.

Tighten
Tighten the left knock sensor to 20 N·m (15 lb ft).




16. Install the left side knock sensor shield.
17. Install the left side knock sensor shield bolts.

Tighten
Tighten the left side knock sensor shield bolts to 50 N·m (37 lb ft).





Important: Do not overtighten the knock sensor.

18. Install the right knock sensor to the engine block.

Tighten
Tighten the right knock sensor to 20 N·m (15 lb ft).




19. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the engine block coolant drain hole plugs.
20. Install the engine block coolant drain hole plugs.

Tighten
Tighten the coolant drain hole plugs to 30 N·m (22 lb ft).




21. Apply sealer GM P/N United States 12377901, GM P/N Canada 10953504, 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 in).



23. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the threads of the oil pressure sensor.
24. Install the oil pressure sensor.

Tighten
Using the J 41712 tighten the oil pressure sensor to 30 N·m (22 lb ft).