The 2021 GMC Sierra HD is an impressive pickup truck with far-reaching abilities. Along with its mechanical partner, the Chevrolet Silverado HD, the Sierra HD is in the second year of a new generation. Where GMC differs from Chevy is that it’s usually a little more upscale. But this is an excellent truck no matter what badge it’s wearing.

Heavy-duty trucks, known technically as Class 2B and Class 3, are tools for hard work, specifically towing and hauling. The 2500HD version has a maximum payload rating of 3,863 pounds and can tow 18,500 pounds.
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