Changes to the 2013 GMC Sierra half-ton are limited to two new exterior colors and the addition of powertrain grade-braking that uses transmission downshifting to ease stress and temperature build-up on the brake rotors.
The 2012 GMC Sierra sports a new four-bar grille and offers heated and cooling seats on the SLT trim. StabilitTrak stability control gains Trailer Sway Control and hill start assist, while cruise control is made standard on the Work Truck. The 2012 GMC Sierra Denali truck gains heated and cooling front seats, a heated steering wheel and a rear backup camera.
Long regarded as the twin of the Chevrolet Silverado, the all-new-for-'07 GMC Sierra offers more differentiation from its General Motors stable-mate in looks, while sharing the same basic architecture and engine choices. Exclusive to the GMC Sierra line, though, is the Denali trim level that brings with it a variety of power and luxury features, making it a "model-within-a-model." Looking to extend their leadership in the pickup truck segment, GM engineers and designers have gone back to their computer screens to concoct a vehicle that offers an improved chassis, more precise steering and not one but two quieter, more upscale interiors. Like its fraternal twin, the GMC Sierra delivers fuel economy that currently leads the large pickup truck category thanks to the new line of Active Fuel Management-equipped V8 engines. And for those who hedge their bets, a Flex-Fuel E85-capable engine is also available.
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