For 1990-2009 cars

1. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the plug threads.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the engine block coolant plug. Tighten the engine block coolant plug to 50 N·m (37 lb ft).
3. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the plug threads.
4. Install the engine block oil gallery plugs to front and left of block.

4.1. | Tighten the side engine block oil gallery plugs to 35 N·m (26 lb ft).

4.2. | Tighten the front (1) engine block oil gallery plug to 80 N·m (40 lb ft).

5. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the EVAP solenoid bolt threads. Tighten the EVAP solenoid bolt to 10 N·m (89 lb in).
6. Install the knock sensor. Tighten the knock sensor to 25 N·m (18 lb ft).
7. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the crankshaft position sensor bolt.
8. Install the crankshaft position sensor and bolt. Tighten the crankshaft position sensor bolt to 10 N·m (89 lb in).
9. Install the oil pressure switch. Tighten the oil pressure switch to 20 N·m (15 lb ft).