If you have a 6.6 Duramax or shopping for one, you know that the fuel economy isn't the best. However, here are three upgrades that will help you get more mpg.

The 6.6L Duramax diesel engine is well regarded in the truck community, but what is considered high mileage for one? Here's a safe estimation.

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.

The average fuel economy stats put the 2017 Silverado 2500 HD in last place, outdone by 0.1 mpg. 2017 Chevrolet 2500 LTZ Midnight Edition (6.6-liter V8 Duramax): 15.1 mpg ...

We test the towing capability of the 2022 Chevy Silverado 2500 HD with the 6.6-liter Duramax Turbodiesel.

Complete information, specs, power and torque ratings on GM's 6.6L L5P V8 Turbo Diesel Duramax engine used in the Chevy Silverado HD and GMC Sierra HD.

One Duramax truck was hooked up to a trailer that purportedly weighed 35,500 pounds—the new maximum tow rating, which is achieved with a rear-wheel-drive regular-cab long-bed dually.

The all-new 2011 Chevrolet Silverado Heavy Duty models might not look all that new and there’s a good reason for it.With tight budgets at GM as of late, the Silverado HD team was given limited ...

The 2008 6.6-liter Duramax uses EGR and recirculates a considerable amount of its exhaust back into the engine for reburning. The engine oil turning black almost immediately after an oil change is ...