CARFAX One-Owner. Serviced and Detailed to Precision, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Jet Black Leather, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports (First Row), 2 USB Ports Inside Console, 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 2nd Row Heated Outboard Seats, 4G LTE Wi-Fi Hotspot Capable, 6" Rectangular Chromed Tubular Assist Steps, Auto-Dimming Inside Rearview Mirror w/Camera, Automatic Emergency Braking, Bed View Camera, Bose Premium 7 Speaker Sound System, Chrome Recovery Hooks, Compass, Compass Located In Instrument Cluster, Deep-Tinted Glass, Denali Ultimate Package, Driver Alert Package I, Driver Alert Package II, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, Following Distance Indicator, Forward Collision Alert, GMC Connected Access Capable, Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, HD Radio, HD Rear Vision Camera, HD Surround Vision w/2 Trailer View Camera Provisions, Heated Driver & Front Outboard Passenger Seats, Hill Descent Control, Hitch Guidance w/Hitch View, In-Vehicle Trailering System App, Integrated Trailer Brake Controller, IntelliBeam Automatic High Beam On/Off, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, Lane Departure Warning System, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, Multicolor 15" Diagonal Head-Up Display, Navigation System, OnStar & GMC Connected Services Capable, Polished Exhaust Tip, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Defogger, Power Sunroof, Preferred Equipment Group 5SA, ProGrade Trailering System, Radio: AM/FM w/Prem GMC Infotainment System & Navi, Rear Cross Traffic Alert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, Signature Denali Grille w/High Gloss Black Mesh, SiriusXM w/360L, Spray-On Pickup Bed Liner w/Denali Logo, Steering Wheel Audio Controls, Technology Package, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver & Front Passenger Seats, Wireless Charging, X31 Off-Road Package. Onyx Black 2020 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel