2021 GMC Sierra 2500HD AT4... ONE OWNER!<br><br>4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel<br>10-Speed Automatic, 4WD, Jet Black W/Kalahari Accents Leather, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports, 2 USB Ports (1st Row), 2-Speed Active Transfer Case, 20'' Machined Aluminum Wheels, 2nd Row Dual USB Charge-Only Ports, 4.2'' Diagonal Color Display Driver Info Center, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, AT4 High Clearance Step (LPO), AT4 Preferred Package, AT4 Premium Plus Package, Bed View Camera w/2 Trailer Camera Provisions, Bose Premium 7 Speaker Sound System, Compass, Compass Located In Instrument Cluster, Deep-Tinted Glass, Driver Alert Package I, Driver Alert Package II, Driver Memory, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, Front dual zone A/C, Fully automatic headlights, Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, HD Radio, HD Rear Vision Camera, HD Surround Vision, Heated & Ventilated Front Bucket Seats, Heated 2nd Row Outboard Seats, Heavy Duty Front Spring/Camper Package, Hitch Guidance w/Hitch View, Integrated Trailer Brake Controller, Keyless Open & Start, Lane Departure Warning System, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Outside temperature display, Painted Black Surround Grille, Perforated Leather-Appointed Front Seat Trim, Perimeter Lighting, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power passenger seat, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Defogger, Power Sunroof, Power Windows w/Driver Express Up/Down, Preferred Equipment Group 4SB, Radio: AM/FM w/Premium GMC Infotainment System, Radio: Premium GMC Infotainment Sys w/Navigation, Rear Prem Floor Liners w/Removable Carpet Insert, Rear Wheelhouse L