New 2026 GMC Sierra 2500 HD Denali For Sale Old Saybrook, CO

Experience the pinnacle of heavy-duty capability and luxury with the new 2026 GMC Sierra 2500 HD Denali Crew Cab 4WD. With only 1 mile on the odometer, this truck boasts a formidable Duramax 6.6L Turbo-Diesel V8 (470hp, 975 lb-ft) paired with a 10-speed Allison automatic transmission and advanced 4X4 system. The Denali Reserve Package adds a power sunroof, 15" head-up display, and rear camera mirror for cutting-edge convenience. Stay comfortable with ventilated and heated leather seats (front and rear), a heated steering wheel, and dual-zone automatic climate control. Trailering is effortless thanks to the ProGrade Trailering System, trailer brake controller, and gooseneck/5th wheel prep. Off-road ready with the X31 Off-Road Package, Rancho shocks, and skid plates. Advanced safety features include HD Surround Vision, Forward Collision Alert, Lane Departure Warning, and more. Enjoy seamless connectivity with a 13.4" touchscreen, Bose Premium Audio, wireless charging, and Google Built-In. The signature Denali grille, 22" black wheels, spray-on bedliner, and MultiPro Tailgate complete this versatile, premium truck. Ready for work or play, the Sierra 2500 HD Denali sets a new benchmark for trucks.