This 2021 GMC Sierra 2500HD AT4 delivers commanding presence and capability in striking Cayenne Red Tintcoat with a jet black interior accented in Kalahari. Built on the legendary 6.6L V8 Diesel Turbocharged engine paired with a 10-speed automatic transmission and 4WD, this crew cab offers the power and control that professionals demand. As a local trade-in, it's ready to serve your toughest jobs and longest hauls. - Gooseneck/5th Wheel Package with Integrated Trailer Brake Controller - Heated Leather Seating with Ventilated Front Seats - AT4 Premium Plus Package - Engine Block Heater and 220-Amp Alternator - Premium GMC Infotainment System with Apple CarPlay and Android Auto - HD Surround Vision with Bed View and Rear Camera - Wireless Phone Projection and Charging - Heated Steering Wheel and Memory Driver Seat - Multicolor 15 Head-Up Display - Lane Departure Warning and Automatic Emergency Braking This truck combines rugged capability with premium comfort and technology. The AT4 trim elevates the experience with specialized off-road features and luxury appointments designed for serious work and refined daily driving. Visit us today and experience the command and confidence this powerhouse delivers.