- Apply a 2-3 mm (0.08-0.12) wide by 0.5-1.5 mm (0.0196-0.0590) 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.
- Install the two flywheel housing to upper oil pan bolts.
- Install the oil level indicator tube.
- Install the oil level indicator tube bracket bolt.
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.
Tighten
Tighten the upper oil pan bolts in sequence to 20 N·m (15 lb ft).
Tighten
Tighten the two flywheel housing to upper oil pan bolts to 50 N·m (37 lb ft)
Tighten
Tighten the oil level indicator tube bracket bolt to 21 N·m (15 lb ft).
