For 1990-2009 cars

1. Use a hammer and a punch in order to install the vent assembly (37), if necessary.
2. Apply sealant GM P/N 12345382 to the oil pressure test hole plug (38).

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.

3. Install the oil pressure test hole plug (38).

Tighten
Tighten the oil pressure test hole plug (38) to 12 N·m (106 lb in).