Onyx Black 2020 GMC Sierra 3500HD SLT BLUETOOTH, HANDS-FREE, LEATHER SEATS, 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-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 4.2'' Diagonal Color Display Driver Info Center, 4G LTE Wi-Fi Hotspot Capable, 6 Speakers, 6-Speaker Audio System Feature, AM/FM radio: SiriusXM with 360L, Chrome Surround Grille w/High Gloss Black Mesh, Compass Located In Instrument Cluster, Deep-Tinted Glass, Driver Alert Package I, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, GMC Connected Access Capable, Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, HD Radio, Heavy Duty Front Spring/Camper Package, Integrated Trailer Brake Controller, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Perimeter Lighting, 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, Preferred Equipment Group 4SA, Premium audio system: Premium GMC Infotainment System, Radio: AM/FM w/Premium GMC Infotainment System, Rear Cross Traffic Alert, Remote Vehicle Starter System, SiriusXM w/360L, Steering Wheel Audio Controls, Suspension Package, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System.