Engine Block Plug Installation

Tools Required 

J 41712  Oil Pressure Switch Socket

1. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the engine coolant drain hole plug.
NOTE: Refer to Fastener Notice in Cautions and Notices.
2. Install the engine coolant drain hole plug into the block.

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

Fig 1: View Of Engine Coolant Drain Hole Plug
Courtesy of GENERAL MOTORS CORP.
3. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the engine block coolant heater, if applicable.
4. Install the engine block coolant heater into the block.

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

Fig 2: View Of Engine Block Coolant Heater
Courtesy of GENERAL MOTORS CORP.
5. Apply sealant GM P/N 12346004 (Canadian P/N 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).

Fig 3: View Of Top Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.
7. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the left side oil gallery plug.
8. Install the engine block left side oil gallery plug.

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

Fig 4: View Of Engine Block Left Oil Gallery Plug
Courtesy of GENERAL MOTORS CORP.
9. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the front oil gallery plugs.
10. Install the front oil gallery plugs.

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

Fig 5: View Of Front Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.
11. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the rear oil gallery plugs.
12. Install the rear oil gallery plugs.

    Tighten:  Tighten the rear oil gallery plugs to 20 N.m (15 lb ft).

Fig 6: View Of Rear Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.
13. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), 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).

Fig 7: View Of Engine Block Oil Cooler Hose Fittings
Courtesy of GENERAL MOTORS CORP.
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).

Fig 8: View Of Left Side Knock Sensor
Courtesy of GENERAL MOTORS CORP.
16. Install the left side knock sensor heat shield.
17. Install the left side knock sensor heat shield bolts.

    Tighten:  Tighten the bolts to 12 N.m (106 lb in).

Fig 9: View Of Left Side Knock Sensor Heat Shield
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not overtighten the knock sensor.
18. Install the right knock sensor (719) to the engine block.

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

19. Install the right side knock sensor heat shield (720) and bolts (721).

    Tighten:  Tighten the bolts to 12 N.m (106 lb in).

Fig 10: View Of Right Side Knock Sensor, Heat Shield & Bolts
Courtesy of GENERAL MOTORS CORP.
20. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the engine block coolant drain hole plugs.
21. Install the engine block coolant drain hole plugs.

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

Fig 11: View Of Engine Block Coolant Drain Hole Plug
Courtesy of GENERAL MOTORS CORP.
22. Apply sealer GM P/N 12377901 (Canadian P/N 10953504), to the outside diameter of the new camshaft rear bearing hole plug.
Fig 12: View Of Camshaft Rear Bearing Hole Plug
Courtesy of GENERAL MOTORS CORP.
23. Install the NEW camshaft rear bearing hole plug to the proper depth of (a) 7.600-6.200 mm (0.299-0.244 in).
Fig 13: View of Camshaft Rear Bearing Hole Plug Depth
Courtesy of GENERAL MOTORS CORP.
24. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the oil pressure sensor.
25. Install the oil pressure sensor.

    Tighten:  Using the J 41712  (1), tighten the oil pressure sensor to 30 N.m (22 lb ft).

Fig 14: Removing & Installing Oil Pressure Sensor Using J 41712
Courtesy of GENERAL MOTORS CORP.