Express 2500 V8-6.6L DSL Turbo (2010)
1. Install the rear main seal. Refer to Crankshaft Rear Oil Seal Installation (See: Engine, Cooling and Exhaust/Engine/Service and
Repair/Overhaul/125. Crankshaft Rear Oil Seal Installation).
2. Install the oil cooler adapter with a NEW gasket to the oil cooler.
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
3. Install the oil cooler adapter to oil cooler bolts and tighten to 21 Nm (15 lb ft).
4. Install NEW gaskets to the flywheel housing for the turbocharger oil return pipe and oil cooler adapter.
5. Apply a 2-3 mm (1/8 in) wide by 0.5-1.5 mm (1/16 in) high bead of sealant GM P/N 12378521 (Canadian P/N 88901148) to the engine block
mating surface.
6. Install the flywheel housing to the cylinder block.
7. Install the flywheel housing bolts and tighten to 80 Nm (60 lb ft).
