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The all-new 2014 GMC Sierra 1500 full-size pickup is the most powerful, most advanced and most refined truck in the brand's 111-year history. Sierra's bold new exterior houses one of three all-new EcoTec3 engines, a fully updated cabin with available next-generation IntelliLink connectivity and other features designed for the most discerning truck owners. "Our engineers and designers left nothing on the table when developing this latest Sierra pickup," said Tony DiSalle, vice president of GMC Marketing....