2015 Chevrolet Silverado HD / 2015 GMC Sierra HD: Heavy Duty Evolution

Photo: Benjamin Hunting.
Even the base 6.0-liter, gas-fired V8 (360 horses, 380 lb-ft of twist) is identical to last year's mill.

Photo: Benjamin Hunting.
Even the base 6.0-liter, gas-fired V8 (360 horses, 380 lb-ft of twist) is identical to last year's mill.

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