For 1990-2009 cars

1. Install the cylinder block-to-cylinder head alignment dowels.
2. Install the NEW front oil gallery expansion plug.
3. Ensure the NEW front oil gallery expansion plug is installed to the proper depth.
4. Install the cylinder block-to-transmission alignment dowels.
5. Apply the RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent on the NEW coolant expansion plugs.
6. Install the NEW coolant expansion plugs.
7. Ensure the NEW coolant expansion plugs are installed to the proper depth.
8. Apply thread sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent on the threads of the M20 left side oil gallery threaded plug.

Caution: Refer to Fastener Caution in the Preface section.

9. Install the M20 left side oil gallery threaded plug.

Tighten
Tighten the M20 left side oil gallery threaded plug to 75 N·m (55 lb ft).

10. Apply thread sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent on the threads of the M14 left side coolant drain threaded plug.
11. Install the M14 left side coolant drain threaded plug.

Tighten
Tighten the M14 left side coolant drain threaded plug to 50 N·m (36 lb ft).

12. Apply thread sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent on the threads of the M14 rear oil gallery threaded plug.
13. Install the M14 rear oil gallery threaded plug.

Tighten
Tighten the M14 rear oil gallery threaded plug to 50 N·m (36 lb ft).

14. Apply thread sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent on the threads of the M14 right side coolant drain threaded plug.
15. Install the M14 right side coolant drain threaded plug.

Tighten
Tighten the M14 right side coolant drain threaded plug to 50 N·m (36 lb ft).

16. Apply thread sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent on the threads of the M14 right side oil gallery threaded plug.
17. Install the M14 right side oil gallery threaded plug.

Tighten
Tighten the M14 right side oil gallery threaded plug to 50 N·m (36 lb ft).

18. Install the cylinder block-to-oil pan alignment dowels.
19. Install the NEW right front oil pan rail oil gallery expansion plug.
20. Ensure the NEW right front oil pan rail oil gallery expansion plug is installed to the proper depth.
21. Install the oil jets.
22. Install the oil jet bolts.

Tighten
Tighten the oil jet bolts to 10 N·m (89 lb in).