2.8L L4 Duramax® Turbo Diesel

ENGINE CONTENT Displacement (cu. in. / cc): Bore & stroke (in. / mm): Valve configuration: Ignition system: Fuel: Compression ratio: Horsepower (hp / kW @ rpm): Torque (lb.-ft. / Nm @ rpm): Emission controls:

Emissions standard: MATERIALS Block: Cylinder head: Intake manifold: Exhaust manifold: Crankshaft: Camshaft: Connecting rods:

169 / 2776 37.0 / 94 x 39.4 / 100 Dual overhead camshafts Direct injection common rail Diesel / B20 diesel compatible 16.5:1 181 / 135 @ 3400 (estimate) 369 / 500 @ 2000 (estimate) Close-coupled diesel oxidation catalyst Selective catalytic reduction with urea injection Diesel particulate filter Positive crankcase ventilation Cooled Exhaust Gas Recirculation Tier 2 BIN 5 / ULEV 125 Grey cast-iron Aluminum Composite Cast-iron Forged steel Powdered Metal / sintered steel lobes Forged steel

ENGINE CONTENT Additional features:

Composite cam cover Poly-V accessory drive belt 29,000 PSI solenoid fuel injectors Water-cooled turbocharger with variable-geometry nozzle Oil level protection switch Ceramic glow plugs EGR cooling system with integrated bypass GM Engineered Controls hardware and software Oil filter housing with integrated oil cooler Dexos™ 2 engine oil Enhanced NVH acoustic package Pressure-regulating valve for active return fuel heating Air mass controlled in closed loop via electronic throttle valve Engine-mounted electro-viscous cooling fan Balance shaft unit with integrated oil pump Positive crankcase ventilation heater Block-mounted 110V coolant heater High-performance/low-temperature timing belt

TECHNOLOGY SET • 29,000 PSI (200 MPa) common rail diesel fuel-injection system • Water-cooled variable geometry turbocharger with integrated exhaust braking capabilities • Engine mounted electro-viscous cooling fan

• B20 biodiesel compatible • Longitudinally central Balance Shaft with integrated oil pump • Ceramic Glow Plugs • GM engineered engine control unit, hardware, software, and calibration

TURBO EXHAUST BRAKING • Turbine vanes are utilized to generate significant exhaust system backpressure

• Combined with transmission grade braking, it allows for virtually effortless downhill driving and towing, with seamless and quiet operation

• Rather than relying on the vehicle’s brakes to slow the vehicle down or maintain a safe speed, the exhaust brake system does it for you • Turbine control to automatically adjust for grade and vehicle load

CLEAN DIESEL • Cleanest diesel truck engine ever produced; over 20% cleaner * than the Ram EcoDiesel truck • It meets some of the toughest U.S. emission standards with proven diesel exhaust aftertreatment processes − Cooled EGR and SCR for NOx reduction, close-coupled DOC for hydrocarbon control, dedicated fuel injector with combined DOC-DPF for efficient soot filtering/burning • B20 biodiesel compatible for reduced dependence on petroleum

Engine Compartment DOC

D O C

SCR

Urea Inj

HC Inj

CDPF

* Estimated, certification pending (Nox + NMHC)

Exhaust Cooler

TRUE TRUCK ENGINE DURABILITY • Built specifically for trucks, the 2.8L Duramax has successfully withstood the same grueling validation tests as the legendary 6.6L heavy-duty Duramax

• Over 35,000 dynamometer hours logged for development, fatigue testing, and thermal cycling • Used internationally for years, the 2.8L Duramax is known for its outstanding quality, reliability, and durability

• Featuring a Forged Steel Crankshaft w/fillet rolled radii, Forged Steel Connecting Rods, cast iron Engine Block, cast iron Balance Shaft housing, piston-cooled Oil Jets, and a water-cooled Variable Geometry Turbocharger

EXTREME WEATHER/ENVIRONMENTAL ROBUSTNESS • Engine robustness to handle the most extreme North American environments • Engine mounted electro-viscous cooling fan and efficient Charge air cooling system to handle extreme hot

driving conditions as in Death Valley, California • Turbo matching optimization for improved performance at altitude • Cold package enhancements to effectively handle the very cold conditions in northern U.S. and Canada

− Ceramic Glow Plugs, higher output Starter Motor, Block Heater, and charging system updates for cold starting down to -40°F − PCV Heater and Active Fuel Return Heating for continued operation

NVH ENHANCEMENTS • Top of engine acoustic treatment, damped steel timing drive cover and lower oil pan, and isolated heat shields yield over 50% reduction in engine noise from its predecessor • Longitudinally central Balance Shafts for improved 2nd order vibration and shaking • First in-segment for Hydraulic Engine Motor Mounts • Centrifugal Pendulum Vibration Absorber torque converter to smooth out engine torsional vibrations for all driving conditions

SAE CERTIFIED HORSEPOWER AND TORQUE

FUEL ECONOMY

Available Later in 2015