2014 GMC Sierra 1500 4X4 - It's been argued by some that a GMC Truck is the same as a Chevrolet and built on the same assembly line. That of course is the argument from Chevrolet owners and not the opinion of GMC. For 2014, GMC offers a completely redesigned Sierra 1500 that goes toe-to-toe with some very stiff competition from Ford and Dodge. To sum up our GMC test -- "Filled with luxury features, utility and over 20 miles-per-gallon."