The new-for-2017 Chevrolet Silverado 2500HD and GMC Sierra 2500HD will use the fifth generation of GM’s Duramax, a 6.6-liter V8 diesel producing 445 hp and 910 lb-ft of torque.

They combine to give this latest-generation Duramax 19 percent more torque (910 pounds-feet compared with 765) and 12 percent more hp (445 versus 397) than the previous engine.

For 2017, the Chevy Silverado 3500HD can be powered by a new version of the 6.6-liter Duramax turbodiesel V-8 engine delivering 445 hp and 910 lb-ft of torque. Those numbers represent a 19 percent ...

A document containing official horsepower and torque numbers for GM’s brand new 6.6-liter V8 Duramax turbo-diesel was found buried on the GM Powertrain website – before the company quickly ...

The all-new 6.6-liter LP5 Duramax turbo-diesel under the Sierra Denali 3500 hood is one of the strongest engines on the road in a heavy-duty pickup, with a factory rating of 445 hp (tops in its ...

GMC's 2017 Sierra HD range has been expanded with the addition of the firm's redesigned Duramax 6.6-liter turbo-diesel V8. Now more powerful than ever, ...

The 2017 Chevrolet Silverado HD lineup is getting a redesigned 6.6-liter Duramax V8 turbocharged diesel engine. Learn more about it at AutoGuide.com.

In Moraine, Ohio, the L5P Duramax in the 2017 Chevrolet Silverado HD and 2017 GMC Sierra HD is matched with a tried-and-tested Allison 1000 6-speed auto box.

Chevrolet offers a choice for the Silverado powertrain: Either the 6.6 L8T gas engine, or the 6.6 Duramax - both of which offer potent towing capacity.

But it looks like GM is getting ready to fight back, specifically with a newlytuned Duramax for its 2016 or 2017 HD pickups. Here's what our hot-weather-loving spy shooters have to tell us: ...

In terms of on-board tech, the 2017 Sierra 2500HD All Terrain X also features GMC IntelliLink with an 8″ color touchscreen, Teen Driver, remote-locking tailgate, remote starting system, Rear ...