For 1990-2009 cars only
- Apply a 2-3 mm wide by 0.5-1.5 mm bead of GM P/N 12378521 (Canadian P/N 88901148) sealant to the upper oil pan mating surfaces.
- Install the upper oil pan to the engine block.
- Install the upper oil pan bolts. Tighten the upper oil pan bolts in sequence to 20 N·m (15 lb ft).
- Install the two flywheel housing to upper oil pan bolts and tighten to 50 N·m (37 lb ft).
- Install the oil level indicator tube.
- Install the oil level indicator tube bracket bolt and tighten to 21 N·m (15 lb ft).
Caution: Refer to Fastener Caution in the Preface section.
