Pros are always finding ways to achieve more. So are GMC engineers. Sierra is a prime example. Its strong, bold stance, revolutionary capabilities, eye-opening technologies and remarkable power allow Sierra’s actions to speak loudly.Experience Professional Grade—the 2021 GMC Sierra 1500.Sierra’s large cargo beds are engineered to work hard. They’re constructed with roll-formed high-strength steel for a strong, durable cargo floor, and range in size from 62.9 cu. ft. to 89.1 cu. ft.2 (Crew Cab models range from 62.9 cu. ft. to 71.7 cu. ft.2; Double Cab models provide 71.7 cu. ft.2; and Regular Cab models offer 89.1 cu. ft.2) Available spray-on bedliners offer protection, and accessory tonneau covers enclose the bed. LED cargo area lamps (standard on SLE, Elevation, SLT, AT4 and Denali) and a 120-volt power outlet (standard on SLT, AT4 and Denali) are available for the bed. For easy access to the bed, the CornerStep rear bumper features largefootwells. You can simply step up into the bed thanks to the available MultiPro Tailgate and its six functions, including a full-width step. Sierra is engineered for optimum trailering confidence. The available ProGrade Trailering System and the technologies below help provide a sense of control when hitching and towing.HEIGHTENED VIEWSEasily keep tabs on your truck and trailer with up to 15 available camera views.1 The available industry-first transparent trailer view helps you to virtually see right through a compatible trailer to detect objects behind it. New for 2021, the available accessory Rear Trailer Camera now provides adaptive guidelines that move and show the predicted path of the trailer based on the steering wheel position when backing up. There’s also an available Jack-Knife Alert and a Trailer Length Indicator forcompatible trailers.On road or off, Sierra is engineered to help inspire driving confidence. The available Traction Select System allows you to tailor your driving experience to multiple road conditions. Denali models add premium ride and handling with continuous damping Adaptive Ride Control.To help you be more aware, Sierra offers safety and driver-assistance technologies engineered to provide a real-time view of the truck and its surroundings. Easily keep tabs on your truck and trailer with up to 15 different camera views1 available with the Technology Package to help you see around the truck and compatible trailers if towing. Additional enhancements such as an available Jack-Knife Alert and Trailer Length Indicator (shown at right) for compatible trailers are new for 2021.