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, three cab styles, and two bed lengths among five wheelbases to fit any lifestyle or work-site requirement. All dressed up in Denali trim, the Sierra HD is a hardworking ranch hand in a tuxedo, ready for the oil baron?s ball. READ MORE ??
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