Ratings: 2021 Chevrolet Silverado 2500HD Ratings - Consumer Reports
The Silverado HD front end has been changed to be more visually distinguished from the Silverado 1500. The big truck is designed to tow and haul heavier loads than the 1500 can handle, but that comes at the expense of ride comfort. The standard engine is a 401-hp, 6.6-liter V8 with a six-speed transmission. A 445-hp, 6.6-liter turbodiesel V8 engine with a 10-speed transmission is also available.
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