For 1990-2009 cars

1. Install the engine front cover gasket.
2. Apply sealer GM P/N 12346004 or equivalent to both sides of the lower tabs of the engine front cover gasket, and the engine front cover bolts.
3. Install the engine front cover.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the engine front cover bolts (2).

Tighten
Tighten the engine front cover bolts (2) to 55 N·m (41 lb ft).

5. Install the engine front cover bolts (3).

Tighten
Tighten the engine front cover bolts (3) to 47 N·m (35 lb ft).

6. Install the engine front cover bolts (1).

Tighten
Tighten the engine front cover bolts (1) to 21 N·m (16 lb ft).