Engine Block Plug Installation
^ Tools Required- J 41712 Oil Pressure Switch Socket
1. Install a NEW oil filter bypass valve.
1.1. Install the oil filter bypass valve into the oil gallery bore until slightly below flush with the surface of the engine block.
1.2. Using a pointed punch, stake the engine block area around the oil filter bypass valve.
Stake in 3 locations 120 degrees apart.
CAUTION: Wear safety glasses in order to avoid eye damage.
2. Apply sealant GM P/N 12346004 or equivalent to the outside diameter of the NEW front engine oil gallery plugs.
3. Install the NEW front engine block oil gallery plugs.
A properly installed front engine oil gallery plug must be installed slightly below flush with the front face of the engine block.
4. Install the spring type S pin (crankshaft rear oil seal housing locator) (if required).
5. Apply sealant GM P/N 12346004 or equivalent to the outside diameter of the NEW expansion cup plug (balance rear bearing hole).
6. Install the NEW expansion cup plug (balance shaft rear bearing hole).
7. Apply sealant GM P/N 12346004 or equivalent to the outside diameter of the NEW expansion cup plug (camshaft rear bearing hole).
8. Install the NEW expansion cup plug (camshaft rear bearing hole).
9. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block right rear oil gallery plug, the engine block left rear oil gallery plug, and the engine block left side oil gallery plug.
10. Install the engine block right rear oil gallery plug, the engine block left rear oil gallery plug, and the engine block left side oil gallery plug.
^ Tighten the engine block left side oil gallery plug and the engine block right rear oil gallery plug to 20 Nm (15 ft. lbs.).
^ Tighten the engine block left rear oil gallery plug 30 Nm (22 ft. lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
11. Install the dowel straight pins (transmission locator) (if required).
12. Install the left side dowel pins (cylinder head locator) (if required).
13. Install the right side dowel pins (cylinder head locator) (if required).
14. Apply sealant GM P/N 12346004 or equivalent to the threads of the engine block coolant drain hole plugs.
15. Install the engine block coolant drain hole plugs.
^ Tighten the engine block coolant hole plugs to 20 Nm (15 ft. lbs.).
16. If reusing the engine oil pressure sensor fitting, apply sealant GM P/N 12346004 or equivalent to the threads of the engine oil pressure sensor fitting.
17. Install the engine oil pressure sensor fitting.
^ Tighten the engine oil pressure sensor fitting to 15 Nm (11 ft. lbs.).
IMPORTANT: Do not loosen the engine oil pressure fitting after the initial torque has been obtained.
18. Rotate the engine oil pressure sensor fitting clockwise to the proper position (1), 50 degrees from the centerline (2).
IMPORTANT: Do not rotate the engine oil pressure fitting clockwise more than 359 degrees after the initial torque has been obtained.
19. If reusing the engine oil pressure gauge sensor, apply sealant GM P/N 12346004 or equivalent to the threads of the engine oil pressure gauge sensor.
20. Install the engine oil pressure gauge sensor using the J 41712.
^ Tighten the engine oil pressure gauge sensor to 30 Nm (22 ft. lbs.).
21. Install the knock sensor.
^ Tighten the knock sensor to 20 Nm (15 ft. lbs.).