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DMAX Ltd. is a joint venture, 60% owned by General Motors, 40% owned by Isuzu Diesel Services of America, Inc. Its facility produces Duramax 6.6L V-8 turbo-diesel engine offered on GMC Sierra and Chevrolet Silverado HD pick-up trucks.

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9/20/2019; 3:00 p.m. DMAX hourly employees, unless otherwise notified by their Group Leader, are on layoff status following their shift on Friday, 9/20/2019. The mass layoff number for filing unemployment claims is 1900356. Employees should follow filing instructions which are listed on the Mass Layoff Instruction Sheet. Updates will be posted to the DMAX website, www.dmaxengines.com, the call in line (937-425-9799), and via the One Call Now system.

About Us

DMAX Ltd. features a 540,000 square-foot manufacturing facility and 44,000 square-foot administration building. Its groundbreaking was held on 1998, while production commenced in 2000. With over 2 million Duramax diesel engines put into operation since its launch in 2000, DMAX Ltd. has extensive diesel engine development experience for meeting the demands of the heavy-duty truck customer.

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What Makes This Engine Great?

  • Unique Fuel Injection System
  • Rigid Block Design Reduces Noise
  • 445 h/p @ 2800 RPM
  • 910 ft/lbs torque @ 1600 RPM
  • Each Engine Cycled Through Hot Test

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