Our Diesel powered 2020 GMC Sierra 3500HD AT4 Crew Cab 4X4 is eager to work on the road or off! Motivated by a TurboCharged 6.6 Litre Diesel V8 offering 445hp and 910lb-ft of torque connected to a 10 Speed Automatic transmission. This Four Wheel Drive also provides impressive trail capability with skid plates, terrain management, and an off-road suspension complete with Rancho shocks, plus it has a ProGrade Trailering System for easier towing and hauling. Bold good looks come into play with LED lighting, fog lamps, red recovery hooks, a spray-on bed liner, side bed steps, power-folding mirrors, aggressive alloy wheels, and GMC’s high-function MultiPro tailgate.Upscale luxury greets you in our AT4 cabin with leather heated/ventilated front and heated rear seats, dual-zone automatic climate control, cruise control, keyless open/start, and clever technology for keeping connected. Highlights include an 8-inch touchscreen, Android Auto/Apple CarPlay, Bluetooth, WiFi compatibility, wireless charging, and a six-speaker sound system. It’s a sophisticated setting for your most demanding days.GMC helps you keep out of harm’s way with an HD rear camera, ABS, traction/stability control, hill-descent control, trailer sway control, a rear-seat reminder, dual-stage front airbags, and more. Rugged yet refined, our 3500 AT4 is ready to roll! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership!