This 2020 GMC Sierra 2500HD Denali delivers the capability and refinement you expect from a premium heavy-duty truck built to handle demanding work and comfortable daily driving.- Duramax 6.6L V8 Turbodiesel engine with 445 horsepower and 910 lb-ft torque- Gooseneck/5th Wheel Package with integrated prep components- Denali Ultimate Package including Technology Package and power sunroof- 10-Speed Automatic transmission with 4WD- Trailer Tire Pressure Monitor Sensors with in-vehicle monitoring app- Heated and ventilated front bucket seats with 10-way power adjustment- Premium GMC Infotainment System with navigation and Apple CarPlay/Android Auto- Bose Premium audio system with SiriusXM satellite radio- HD Surround Vision with trailer view camera provisions and Bed View Camera- Multicolor 15 Head-Up Display with in-vehicle trailering system app- Automatic Emergency Braking and Lane Departure Warning- Integrated Trailer Brake Controller for enhanced towing control- 220-amp alternator and engine block heater for reliable cold-weather starts- 20 chrome aluminum wheels with all-weather floor liners- Power sunroof, remote vehicle starter, and wireless chargingBuilt on the Denali platform, this truck combines luxury with serious capability. The Duramax diesel engine provides the power needed for heavy hauling while maintaining fuel efficiency for long journeys. The 10-speed automatic transmission offers smooth shifting and responsive performance whether you're accelerating on the highway or managing challenging terrain with the 2-speed active transfer case.The Denali Ultimate Package elevates the driving experience with technology that matters. The premium infotainment system integrates seamlessly with your smartphone through Apple CarPlay and Android Auto, while the integrated trailering app gives you real-time monitoring of your trailer. The multicolor head-up display keeps critical information visible without dividing your attention from the road.Safety and control come standard. Automatic Emergency Braking, Lane Departure Warning, and Rear Cross Traffic Alert work together to help prevent accidents. The HD Surround Vision system provides multiple camera angles, and the Integrated Trailer Brake Controller ensures stable towing for large loads. Hill Descent Control helps manage steep grades while the exhaust brake provides additional engine braking capability.Comfort extends across all rows with heated and ventilated front seats, heated rear outboard seats, and genuine leather-appointed trim. The heated steering wheel and dual-zone automatic climate control ensure comfort in any season. The power sunroof, wireless charging pad, and overhead console with ambient lighting add convenience and comfort to each drive.This Sierra 2500HD Denali stands ready for work or weekend getaways—a truck that commands attention with its signature Denali grille, polished exhaust tip, and premium 20 chrome aluminum wheels while delivering the towing and hauling capability serious truck owners demand.