These changes meant that the refreshed Duramax now had 360 hp and 650 lb-ft of torque when paired with a new six-speed Allison automatic transmission that debuted in GM's heavy-duty trucks ...

The drivetrain includes a 10-speed Allison automatic transmission and provides up to 36,000 pounds of towing capacity when properly equipped. The Duramax is built on a strong foundation with its ...

GMC Sierra 2500 HD Crew Cab Pro 4x4 features the long bed configuration and has just 284 miles on its 6.6-liter V8 engine ...

The Duramax engine, in particular, quickly gained a reputation for durability and efficiency. Paired with the Allison 1000 five-speed automatic transmission, this powertrain combo made towing and ...

Whether it’s a Ford Powerstroke, Chevrolet/GMC Duramax, or Dodge Cummins engine ... Our Master Certified Transmission Rebuilders specialize in popular models like the 68RFE, Allison A1000, 6R140, and ...

Whether it’s a Ford Powerstroke, Chevrolet/GMC Duramax ... Our Master Certified Transmission Rebuilders specialize in popular models like the 68RFE, Allison A1000, 6R140, and more, providing ...

When you think of heavy-duty trucks, images of construction sites and rugged workhorses typically come to mind. However, GMC's Sierra Denali 2500 HD (Heavy Duty) challenges these conventional notions ...