Designed to deliver class-leading capability with enhanced comfort and smarter technologies, the new 2015 GMC Sierra HD lineup advances a 111-year legacy of professional heavy-duty trucks.
Segment-leading capabilities across the range include the highest payload - 7,374 pounds - and the highest conventional trailering rating - 19,600 pounds. The maximum fifth-wheel trailering rating is 23,200 pounds. Gas and Duramax diesel powertrains are offered, including a bi-fuel option that pairs the gas engine with a compressed natural gas system. Bold styling and an all-new, more comfortable and technology-infused interior are carried forward from the 2014 Sierra 1500, including new double cab and revised crew cab body styles. Larger rear doors on each, along with new seat designs, enable easier entry and exit from the rear seat and two inches of additional legroom on crew cabs. Additional new and enhanced features for the 2015 GMC Sierra HD lineup include CornerStep rear bumper, EZ Lift and Lower tailgate, StabiliTrak with Trailer Sway Control, integrated cruise control, auto grade braking and diesel exhaust braking, IntelliLink infotainment and more.