The next-generation Sierra HD exterior is more visually distinguished from the light-duty Sierra with the redesign. In fact, the Sierra HD shares only its roof with the light-duty. All other visible elements are unique to the work-focused HD truck. The standard engine is a 401-hp, 6.6-liter direct-injection V8 with a six-speed transmission.
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There are 3 recalls on this vehicle. Learn More.
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