For 1990-2009 cars

#### 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.

Notice: Refer to Fastener Notice in the Preface section.

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).

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).

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).

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

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).

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 30 N·m (22 lb ft).

13. Apply thread adhesive 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).

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

Tighten
Tighten the left side knock sensor heat 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 12346004, (Canadian P/N 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 12377901, (Canadian P/N 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).
23. Apply sealant GM P/N 12346004, (Canadian P/N 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).