For 1990-2009 cars

1. Ensure the oil pan and mounting surface on the lower crankcase are free of all oil and debris.
2. Apply a 3.5 mm bead of GM P/N 12378521 (Canadian P/N 88901148), or equivalent, around the perimeter of the oil pan and the oil suction port opening.
3. Install the oil pan.

Caution: Refer to Fastener Caution in the Preface section.

4. Install the oil pan bolts and tighten in sequence to 25 N·m (18 lb ft).