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Ultimate Heavy Duty Challenge: Behind the Scenes Footage

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Last month, we announced that the 2015 GMC Sierra 3500 HD was named the victor in the Ultimate Heavy Duty Challenge 1-ton diesel category. The 2015 Sierra 3500 HD was chosen carefully by,, and after two weeks of rigorous testing.

2015 GMC Sierra 3500 HD | Ultimate Heavy Duty Challenge

The 2015 GMC Sierra 3500 HD ©GM

The 2015 GMC Sierra 3500 HD, powered by a 6.6-liter Duramax, was up against a 2015 Ram 3500 with a 6.7-liter Cummins and a 2015 Ford F-350 with a 6.7-liter Power Stroke.

The first week of testing took place in Michigan, home to all three of the American pickups. Then testing switched over to the harsh deserts and mountains of Arizona and Colorado.

Curious to see how the 19 various parts of testing were conducted? Now you can, with’s behind the scenes footage of the Ultimate Heavy Duty Challenge. Check it out below:

Ultimate Heavy Duty Challenge 1-Ton Diesel Category