The Duramax I6 engine is a

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

available in select models of

General Motors The General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and ...

light-duty

trucks A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction ...

and

SUVs A sport utility vehicle (SUV) is a car classification that combines elements of road-going passenger cars with features from off-road vehicles, such as raised ground clearance and four-wheel drive. There is no commonly agreed-upon definitio ...

. Applications include the Chevrolet Silverado/GMC Sierra 1500, Chevrolet Suburban/GMC Yukon XL, Chevrolet Tahoe/GMC Yukon, and

Cadillac Escalade The Cadillac Escalade is a full-size luxury SUV engineered and manufactured by General Motors. It was Cadillac's first major entry into the SUV market. The Escalade was introduced for the 1999 model year in response to competition from the Merced ...

(both short wheelbase and ESV). The engine was developed together with Opel, who are manufacturing three- and four-cylinder versions displacing 1.5 and 2.0 liters, using the same engine architecture.

Engine details

*Displacement: 3.0L *Configuration: I6 *

Horsepower Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the ...

: 277-305 hp @ 3750 rpm *

Torque In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of th ...

: 460-495 ft-lb @ 1500 rpm *RPO code: LM2(until 2022), LZ0(2023-present) *Intercooler: liquid-to-air *Block: Aluminum *Head: Aluminum * Crank: Forged Steel *Rods: Forged *Pistons: Hypereutetic cast aluminum alloy *Cylinder liners: Iron The engine's timing components are located at the rear of the engine, and feature timing chains to drive the camshafts and high pressure fuel pump, and a wet belt to drive the oil pump. Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in

Turin, Italy Turin ( , Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. T ...

. The engine is being produced at the GM Flint Engine Plant in

Flint, Michigan Flint is the largest city and seat of Genesee County, Michigan, United States. Located along the Flint River, northwest of Detroit, it is a principal city within the region known as Mid Michigan. At the 2020 census, Flint had a population of 8 ...

, USA. Multiple testing has shown 40 MPG is possible when

hypermiling Hypermiling is driving or flying a vehicle with techniques that maximize fuel efficiency. Those who use these techniques are called "hypermilers". In the case of cars, this is an extreme form of energy-efficient driving. Hypermiling can be practi ...

References

{{DEFAULTSORT:Duramax 6 General Motors engines Diesel engines by model Straight-six engines