• A 2014 GMC Sierra pickup undergoes testing in the GM Aerodynamics testing. Time spent in the lab led to advancements in body design and sealing.
  • The 2014 GMC Sierra's new front air dam directs air out and around the truck's tires, benefitting the truck's aerodynamic efficiency.
  • A 2014 GMC Sierra pickup undergoes testing in the GM Aerodynamics testing. Time spent in the lab led to advancements in body design and sealing.

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Despite initially launching in just the Crew Cab configuration, the lineup of 2014 GMC Sierra and 2014 Chevrolet Silverado trucks will eventually grow to include three cab sizes and three bed lengths. Oddly enough, our first look at the Regular Cab bodystyle has arrived in a General Motors press release discussing the aerodynamics of the new truck, with an image showing a Sierra Regular Cab testing in the wind tunnel. GMC's website says that Regular Cab and Double Cab models will be available by

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