2017 GMC Sierra 2500HD/3500HD in Depth: Torque for Days

The Sierra HD blends country-boy roots with big-city glitz. As the Chevy Silverado HD’s fraternal twin, the Sierra HD shares its chassis and optional Duramax diesel/Allison transmission duo. They yield a class-leading 445 horsepower and an eye-popping 910 lb-ft of torque that’ll tow up to 23,300 pounds behind the 3500HD. Mix and match two engines, […]

from Trucks, Cars and SUV’s for Sale http://ift.tt/2pEbsFJ

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