The Duramax I6 engine is a diesel engine available in select models of General Motors light-duty trucks and SUVs. Applications include the Chevrolet Silverado/GMC Sierra 1500, Chevrolet Suburban/GMC Yukon XL, Chevrolet Tahoe/GMC Yukon, and Cadillac Escalade (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: Inline 6
- Horsepower: 277-305 hp @ 3750 rpm
- Torque: 460-495 ft-lb (624-671 nm) @ 1500 rpm
- RPO code: LM2(until 2024), LZ0(2023-present)
- Intercooler: liquid-to-air
- Block: Aluminum
- Head: Aluminum
- Crankshaft: Forged Steel
- Rods: Forged
- Pistons: Hypereutetic cast aluminum alloy - LZ0 upgraded to steel pistons
- 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.[1]
Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in Turin, Italy.[2][3] The engine is being produced at Flint Engine Operations.[4] A test by Car and Driver showed 40 MPG is possible when hypermiling.[5]
References
- ^ Archived at Ghostarchive and the Wayback Machine: What you don't know about the 3.0-liter Duramax diesel. YouTube.
- ^ "Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel".
- ^ Gibbs, Nick (23 June 2018). "GM's hopes for a diesel revival start in Turin". Automotive News Europe. Retrieved 27 December 2019.
- ^ "GM Corporate Newsroom - United States - Company".
- ^ "2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable". 10 December 2019.
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