A perennial competitor to Ford's Power Stroke V8 and Ram's Cummins turbo diesel inline six-cylinder engines, the 6.6-liter Duramax is one of the most popular diesel powertrains for heavy-duty trucks, ...

Shop 2021 GMC Sierra 2500 vehicles in Elburn, IL for sale at Cars.com. Research, compare, and save listings, or contact sellers directly from 4 2021 Sierra 2500 models in Elburn, IL.

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