Providing the stick is the company's very own four - wheel drive system, which is
fed by a diesel engine producing as much as 420 Nm (310 pound - feet of torque) at 1,500 rpm.
Additional
engine features: Iron cylinder block and aluminum DOHC cylinder head Forged steel crankshaft and connecting rods Oiling circuit that includes a dedicated
feed for the turbocharger to provide increased pressure at the turbo and faster oil delivery Piston - cooling oil jets 16.5:1 compression ratio Common rail direct injection fuel system Ceramic glow plugs for shorter heat - up times and higher glow temperatures Balance shaft that contributes to smoothness and drives the oil pump Laminated steel oil pan with upper aluminum section that contributes to
engine rigidity and quietness B20 bio-
diesel capability The Duramax 2.8 L is the cleanest
diesel truck
engine ever produced
by General Motors, and meets some of the toughest U.S. emissions standards, thanks in part to a cooled exhaust gas recirculation (EGR) system.
This rear - wheel - drive van is powered exclusively
by a 2.0 - liter gasoline -
fed turbocharged four - cylinder — no
diesel engine offering is on the table at present.