"SHEEHY GMC HAGERSTOWN is your one stop shop for all your vehicle needs. Your New vehicle is just a few clicks away, offering you an easy streamlined shopping experience. Our transparent and professional sales staff will take pride in giving you red carpet treatment throughout your buying process. Let's get started! Elevate your driving experience with the exceptional 2026 GMC Sierra 2500HD AT4X. This powerhouse of a truck is more than just a workhorse; it's a true off-road champion that seamlessly blends rugged capability with refined luxury.- Onyx Black exterior with Black accents- Duramax 6.6L V8 Turbodiesel engine delivering an impressive 470 horsepower and an astounding 975 lb-ft of torque- 10-speed automatic transmission and 4WD for unparalleled performance and control- Gooseneck/5th Wheel Prep Package for effortless towing of the heaviest loads- Engine block heater for reliable cold-weather operationIndulge in the premium features that set this Sierra 2500HD AT4X apart:- Bose Premium Series 12-Speaker Sound System for an immersive audio experience- Heated and ventilated front seats, along with heated rear outboard seats, for year-round comfort- Multicolor 15"" Diagonal Head-Up Display for seamless access to vital driving information- Wireless Charging and Wireless Phone Projection for convenient connectivity- Trailer Cam Provisions and Trailer Viewing Software for confident towingThe Sierra 2500HD AT4X also prioritizes your safety and convenience with advanced technology, including:- Automatic Emergency Braking, Forward Collision Alert, and Front Pedestrian Braking to help avoid collisions- Rear Cross Traffic Alert and Trailer Side Blind Zone Alert to enhance your awareness on the road- Ultrasonic Front and Rear Park Assist to simplify maneuvering in tight spacesThis exceptional truck is more than just a capable workhorse; it's a true expression of your adventurous spirit. Experience the power, luxury, and innovation of the 2026 GMC Sierra 2500HD AT4X. Visit our showroom today and let us demonstrate how this remarkable vehicle can elevate your driving experience."