For 1990-2009 cars

1. Lubricate the oil level indicator tube O-ring with GM P/N 12345501, GM P/N Canada 992704.
2. Install the oil level indicator and the oil level indicator tube into the oil pan.

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 level indicator tube bracket to the intake manifold bolt.

Tighten
Tighten the bolt to 10 N·m (89 lb in).

4. Install the electrical wiring harness to the oil level indicator tube.
5. Install the knock sensor wiring clip into the oil level indicator tube.

1. Install the oil level indicator tube into the block.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the indicator tube bracket to the intake manifold bolt.

Tighten
Tighten the oil level indicator tube-to-intake manifold bolt to 10 N·m (89 lb in).