JUST SERVICED!, BELOW MARKET AVERAGE MILES!, PRICED TO SELL!, GREAT DEAL!, APPLE CAR PLAY!, LEATHER!, HEATED AND COOLED SEATS!, HEATED 2ND ROW!, BACKUP CAMERA!, BLUETOOTH!, XM RADIO!, HEATED STEERING WHEEL!, POWER DRIVER SEAT!, 4WD!, 18'' WHEELS!, REMOTE START!, SPRAY IN BED LINER!, TOWING PACKAGE!, Sierra 3500HD AT4, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Jet Black w/Kalahari Accents w/Perforated Leather-Appointed Front Seat Trim, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 18'' Machined Aluminum Wheels, 2 USB Ports (First Row), 2 USB Ports Inside Console, 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 3.42 Rear Axle Ratio, 4.2'' Diagonal Color Display Driver Info Center, Bed View Camera w/2 Trailer Camera Provisions, Compass Located In Instrument Cluster, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, GMC Connected Access Capable, Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, HD Rear Vision Camera, Heated Driver & Front Outboard Passenger Seats, Heated Steering Wheel, Hill Descent Control, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Painted Blk Surround Grille w/High Gloss Blk Mesh, 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 4SB, Prem Front Floor Liners w/Removable Carpet Insert, Prem Rear Floor Liners w/Removable Carpet Insert, ProGrade Trailering System, Rear Wheelhouse Liners, Red Recovery Hooks, Remote Vehicle Starter System, Spray-On Pickup Bed Liner w/AT4 Logo, Steering Wheel Audio Controls, Unauthorized Entry Theft-Deterrent System, Ventilated Driver & Front Passenger Seats, Wi-Fi Hotspot Capable, Wireless Phone P