This commanding 2020 GMC Sierra 3500HD Denali in crisp white frost delivers serious capability paired with refined luxury. Built on a crew cab standard bed platform with 4WD and a turbocharged 6.6L V8 diesel engine, this truck handles demanding work and towing with confidence. The Dark Walnut and Dark Ash Grey interior reflects the Denali's premium positioning, while the truck's extensive feature set ensures comfort on every journey.- Gooseneck/5th Wheel Package with Heavy-Duty Front Spring/Camper Package- 6.6L V8 Diesel Turbocharged engine with 220-amp alternator and engine block heater- Denali Ultimate Package with premium appointments- Premium GMC Infotainment System with Apple CarPlay, Android Auto, and navigation- HD Surround Vision with trailer view camera provisions and bed view camera- Heated and ventilated front seats with 10-way power adjustment and lumbar support- Ultrasonic front and rear park assist with multicolor 15 head-up display- Wireless charging, 4G LTE Wi-Fi hotspot, and OnStar connectivity- ProGrade Trailering System with integrated trailer brake controller- Signature Denali styling including grille, wheel arch moldings, and polished exhaust tipAt 135,542 miles, this Sierra represents a well-maintained example of GMC's heavy-duty lineup. Visit our showroom today to experience the commanding presence and capable engineering that make this truck ready for serious work or leisure adventures alike.