The all-new 2014 GMC Sierra 1500 full-size pickup is the most powerful, most advanced and most refined truck in the brand's 110-year history. GMC 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. Premium materials, attention to detail and purposeful technology define GMC Sierra's all-new cabin. New soft-touch materials and available aluminum trim line an interior that's focused on usable and productive space. For the first time on Extended Cab models, the 2014 Sierra has new front-hinged rear doors with outside pull handles at the rear, providing improved access in tight parking spaces. Unlike trucks with rear-hinged doors, Sierra's layout allows rear passengers to enter and exit the vehicle with the front doors remaining closed. A suite of active safety features will be optional for the 2014 Sierra, including Forward Collision Alert, which uses a forward-facing camera to notify the driver of an imminent collision, and Lane Departure Warning, which uses the same camera to track the truck's position in relation to a road's lane markers.