General Motors’ 3.0L I6 LM2 Duramax turbocharged diesel engine has been temporarily discontinued. According to a GM spokesman, the interruption was due to a temporary supplier problem.
“We have currently stopped production of trucks with the 3.0-liter Duramax diesel engine due to a temporary shortage of parts,” said Megan Soule, manager of Chevrolet Trucks and Full-Size SUV Communications, in a statement to the GM Authority. “We will resume production with the 3.0-liter Duramax diesel as soon as possible.”
The turbocharged 3.0-liter I6-LM2 Duramax diesel engine will be available as an option on GM’s full-size pickup trucks, including the Chevy Silverado 1500 and GMC Sierra 1500, as well as all of the next-generation full-size SUVs GM, including Chevy Tahoe, offered. Chevy Suburban, GMC Yukon and Cadillac Escalade.
Powering 277 horsepower at 3,750 rpm and 460 pound-feet of torque at 1,500 rpm, the supercharged 3.0L I6 LM2 Duramax diesel engine is manufactured at GM’s Flint Engine Plant in Flint, Michigan.
Features of the turbocharged 3.0L I6 LM2 Duramax diesel engine include an aluminum head and block, as well as a forged steel crankshaft and forged rods. The pistons are made of a hypereutetic cast aluminum alloy, while the cylinder liners are made of iron.
The supercharged 3.0L I6 LM2 Duramax diesel engine has a DOHC valve train, 84 mm bore and 90 mm stroke with a compression ratio of 15.0: 1. The fuel system includes a common rail with direct injection. The induction air is cooled with a liquid-air charge air cooler.
The turbocharged 3.0L I6 LM2 Duramax diesel engine offers high low end torque, which makes it a great option for towing, and offers high fuel efficiency as well. For example, when rear-wheel drive in the 2021 Chevy Suburban, the LM2 delivers 21 mpg in the city, 27 mpg on the highway, and 23 mpg combined with an estimated annual fuel cost of $ 1,650.
Subscribe to GM Authority for more General Motors production news and 24/7 GM coverage.