Duramax I6 engine

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.

Reciprocating internal combustion engine
  • ultra-low-sulfur diesel
  • B20 biodiesel
  • EN 590 diesel
OutputPower output277–305 horsepower (207–227 kW)Specific power92.3-101.7 hp/LTorque output460–495 pound-feet (624–671 N⋅m)DimensionsLength908 millimetres (35.7 in)Width914 millimetres (36.0 in)Height903 millimetres (35.6 in)Dry weight212 kilograms (467 lb)EmissionsEmissions target standardTier 3 Bin 160

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

  1. ^ Archived at Ghostarchive and the Wayback Machine: What you don't know about the 3.0-liter Duramax diesel. YouTube.
  2. ^ "Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel".
  3. ^ Gibbs, Nick (23 June 2018). "GM's hopes for a diesel revival start in Turin". Automotive News Europe. Retrieved 27 December 2019.
  4. ^ "GM Corporate Newsroom - United States - Company".
  5. ^ "2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable". 10 December 2019.
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GM engine timeline, 1980–present
1980s 1990s 2000s 2010s 2020s
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
Gasoline Flat 4 EJ
Inline OHV Ecotec
Iron Duke Family 0
CIH H AZ
G Quad 4 ZZ ZR
Slant-4 A S-TEC
Starfire Saturn Atlas MGE
Family II SGE
Family 1
122 L3B
X G
J
5 Atlas
3 G S-TEC
Family 0
SGE
E-Turbo
6 Chevrolet
Red Blue Black RB30 Atlas
CIH E-TEC
V Buick
90°
60°
54° High Feature
H J
Shortstar High Value Ecotec3
16 16
8 Rocket Northstar Blackwing
Pontiac High Technology
Big Block
Holden
Cadillac LS
Small Block
Diesel Detroit Duramax
Oldsmobile
6 Oldsmobile DMAX
Inline M51 Duramax
Detroit 60
6H
4 JTD
RA Family Z
E Circle L
Family II Family B
A
MDE
  • non-GM engines used in
    GM vehicles italicized
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
1980s 1990s 2000s 2010s 2020s