This 2021 GMC Sierra 2500HD AT4 delivers commanding presence and capability in a sophisticated black exterior. Powered by a Duramax 6.6L V8 Turbodiesel engine paired with a 10-speed automatic transmission and 4WD, this truck is built for demanding work and adventure. The AT4 Preferred Package, Driver Alert Package I, Preferred Equipment Group 4SB, and X31 Off-Road Package combine to create a premium, trail-ready machine that doesn't compromise on comfort or technology. **Key Features:** - Premium GMC Infotainment System with Navigation and Wireless Phone Projection - Bose Premium 7 Speaker Sound System with Steering Wheel Controls - Heated and Ventilated Front Bucket Seats with 10-way power adjustment - Bed View Camera with 2 Trailer Camera Provisions and HD Surround Vision - Lane Change Alert with Side Blind Zone Alert and Rear Cross Traffic Alert - Ultrasonic Front and Rear Park Assist with Integrated Trailer Brake Controller - Remote Vehicle Starter System and Keyless Open & Start - 120-Volt Bed Mounted and Instrument Panel Power Outlets with Wireless Charging - 2-Speed Active Transfer Case and Hill Descent Control - Spray-On Pickup Box Bed Liner with AT4 Logo This Sierra 2500HD showcases meticulous maintenance and careful handling with low mileage for the model year. The exterior features red recovery hooks, painted black surround grille, and LED smoked amber roof marker lamps that define the AT4 aesthetic. Inside, premium floor liners, heated steering wheel, and comprehensive connectivity through OnStar & GMC Connected Services round out an impressive cabin designed for both professional and personal use. With its turbodiesel efficiency, advanced safety technology, and comprehensive comfort features, this 2500HD is ready to handle any task while keeping you connected and secure. Visit us today to experience the commanding capability and refined luxury this truck brings to the road. At Reineke Family of Dealerships, we pride ourselves on delivering a convenient and transparent buying experience. Get your key from Reineke! Please be aware that all listed vehicles are subject to additional applicable sales tax, titling, license, and registration fees, including a registration convenience fee of $50 where applicable and a documentary fee of up to $398. We attempt to update this inventory on a regular basis. However, there can be a delay between the sale of a vehicle and the update of the inventory. Vehicle mileage listed may vary due to vehicle demonstrations. All pre-owned vehicles are represented a