The Environmental Protection Agency has yet to release its official highway, city and combined fuel economy ratings for the 2020 GMC Sierra 2500HD with the 6.6-liter L5P Duramax diesel V8 engine, but ...
GMC added the AT4 off-road trim to the redesigned 2020 Sierra heavy-duty lineup. We recently took possession of a loaded 2020 Sierra 2500 AT4 crew cab and wondered just how its fuel economy would ...
The 7.3 PowerStroke, 5.9 Cummins, and 6.6 Duramax, are all iconic diesel engines, but how do they compare? Here's a ...
In the world of heavy-duty pickups, competition under the hood is fierce, with major brands like Duramax, Cummins, and Powerstroke, making the list of the most reliable diesel engines ever built. In ...
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