Being an early-2000s diesel engine, the LB7 Duramax doesn't have ... to help improve efficiency and fuel economy. There are a few common problems with the 3.0 Duramax engine.

In 2019, General Motors introduced the Duramax 3.0 diesel engine in its lineup, which could outperform or match its rivals in power and towing capacity. Several years later, in 2023, the inline ...

But there's also a 3.0-liter turbodiesel that may have slightly ... One driver on Reddit said they even got 30 mpg with the diesel variation, likely on the highway. Another Reddit user explained ...

And, no matter what trim you choose (aside from the off-road-oriented Z71), you can buy the large SUV with an available ...

We will make the 2020MY Duramax available for dealers orders soon, and expect to deliver the first trucks to customers soon after emissions testing is complete." We know the new 3.0-liter Duramax ...

But there was something else, something that—quite frankly—caught most of us by surprise: the addition of an optional diesel engine. In its latest iteration, the Tahoe offers a 3.0-liter ...

A fuel-efficient 3.0-liter Duramax or a 6.6-liter Duramax V8 ... the smaller pickup truck shows a fuel efficiency of 13.7 mpg. The giant has drunk 11.1 mpg. Things get even better for the GMC.