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Regular cabs are available with the 6-foot, 6-inch or 8-foot box lengths, while the extended cab will come exclusively with a 6-foot, 6-inch box. Crew Cab customers can choose between two bed lengths; in addition to the current 5-foot, 8-inch box, a new 6-foot, 6-inch box is available. Updates to the body and chassis are designed to improve ride and handling, comfort and capability. The Sierra 1500's engine portfolio is updated for 2014 with the goal of increased in power, torque and fuel efficiency across the board. Each of the available EcoTec3 4.3-liter V6, a 5.3-liter V8 and a 6.2-liter V8 engines features direct injection and Active Fuel Management, which means they seamlessly switch to run on four cylinders during light-load driving to save fuel.
New soft-touch materials and available aluminum trim line an interior that is focused on usable and productive space. Available IntelliLink connectivity uses an available high-definition, fully reconfigurable eight-inch color touchscreen. Heated seats are available with cloth seats and standard with leather. Available LED cargo lights integrated beneath the bed rails will illuminate the bed when a tonneau cover is in place. The available EZ Lift and Lower tailgate uses an integrated torsion bar and damper to ease lifting and lowering. Paired with Forward Collision Alert and Land Departure Warning is GMC's first-ever Driver Alert Seat, which generates vibrating pulse patterns on the left and/or right side of the lower seat cushion bolster to alert the driver of potential dangers, such as an un-signaled lane change or approaching another vehicle too quickly. Other new features include available front Park Assist, in addition to the rear Park Assist already available, and a sliding rear window with a defroster.