New 2026 GMC Sierra 2500HD AT4 For Sale Old Saybrook, CT

Experience exceptional power and capability with this new 2026 GMC Sierra 2500 HD AT4 Crew Cab 4WD in classic White, boasting only 9 miles on the odometer. Driven by a robust 6.6L V8 engine delivering 401hp and paired with a 10-speed Allison automatic transmission, this truck is ready for any challenge. The AT4 Premium Plus Package brings a power sunroof, 15" head-up display, and a Bose premium sound system. Enjoy advanced safety features like HD Surround Vision, Forward Collision Alert, Lane Departure Warning, and Automatic Emergency Braking. Stay comfortable with heated and ventilated leather front seats, heated rear seats, dual-zone automatic climate control, and a heated steering wheel. The MultiPro Tailgate, spray-on bedliner, power-retractable assist steps, and integrated trailer brake controller make hauling and loading a breeze. Off-road ready with X31 Off-Road Package, Rancho shocks, skid plates, and all-terrain tires. Tech highlights include a 13.4" GMC Infotainment screen, wireless charging, Google Built-In, and Wi-Fi hotspot capability. Backed by comprehensive factory warranties, this Sierra 2500 HD AT4 offers luxury, ruggedness, and leading-edge technology-ready for work or adventure.