*Why BUY from Twin City Buick GMC?*When you choose this *Brownstone Metallic 2021 GMC Sierra 3500HD SLT* with *91,711* miles, you are not just buying a used vehicle - you are investing in quality, reliability and peace of mind. Our clientele depend on us for *Transparent Pricing, Convenience* and, most importantly, *Customer FIRST Service!**What this vehicle includes:*=== SLT Convenience Package === * Power Sliding Rear Window with Defogger * Front Bucket Seats * Floor-Mounted Center Console * 2nd Row Heated Outboard Seats * Ventilated Driver and Front Passenger Seats * 2 USB Ports Inside Console * 2 USB Ports (first Row) * LED Smoked Amber Roof Marker Lamps * Universal Home Remote=== Driver Alert Package I === * Perimeter Lighting * Ultrasonic Front and Rear Park Assist * Rear Cross Traffic Alert * Lane Change Alert with Side Blind Zone Alert=== Driver Alert Package II ($645 value) === * Safety Alert Seat * IntelliBeam Automatic High Beam On/off * Following Distance Indicator * Forward Collision Alert * Lane Departure Warning * Automatic Emergency Braking=== X31 Off-Road and Protection Package ($1,380 value) === * Spray-On Pickup Bed Liner with GMC Logo * 20" Machined Aluminum Wheels * LT275/65R20 AT BW Tires * All-Weather Floor Liners=== X31 Off-Road Package === * Hill Descent Control * Skid Plates * Off-Road Suspension=== SLT Premium Package === * 6" Rectangular Chromed Tubular Assist Steps * Spray-On Pickup Bed Liner with GMC Logo=== Preferred Equipment Group 4SA === * GMC Connected Access Capable * Power Front Passenger Windows with Express Up/down * Power Rear Windows with Express Down * Deep-Tinted Glass * Keyless Open and Start * Power Door Locks * Power Front Windows with Driver Express Up/down * Rear Wheelhouse Liners * Remote Vehicle Starter System * Electric Rear-Window Defogger * Compass Located in Instrument Cluster * Chrome Surround Grille with High Gloss Black Mesh * Integrated Trailer Brake Controller * 120-Volt Bed Mounted Power Outlet * 120-Volt Instrument Panel Power Outlet * 12-Volt Rear Auxiliary Power Outlet * Electrical Lock Control Steering Column * Manual Tilt-Wheel/telescoping Steering Column * 2-Speed Active Transfer Case * ProGrade Trailering System * 4.2" Diagonal Color Display Driver Info Center * OnStar and GMC Connected Services Capable * LED Cargo Area Lighting * Steering Wheel Audio Controls * 2nd Row Dual USB Charge-Only Ports * Unauthorized Entry Theft-Deterrent System * 4G LTE Wi-Fi Hotspot Capable * Wireless Phone Projection=== Gooseneck/5th Wheel Package === * Spray-On Pickup Bed Liner with GMC Logo * Bed View Camera with Two Trailer Camera Provisions * Gooseneck/5th Wheel Prep Package=== SLT Preferred Package === * AM/FM Stereo with Premium GMC Infotainment System and Navigation * Wireless Charging * Bose Premium 7 Speaker Sound System * Bed View Camera with Two Trailer Camera Provisions * HD Surround Vision with 2 Trailer View Camera Provisions=== Power Sunroof ($995 value) ====== Duramax 6.6L Turbo-Diesel V8 Engine ($9,890 value) ====== Safety and Security === * The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision. * The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.=== Technology and Telematics === * Without the need for a manufacturer specific app to be installed on the smart device, the vehicle infotainment system can access and control functions of a smart device physically plugged-into the vehicle. * Apple CarPlay/Android Auto smart device wireless mirroring * Mobile devices can wirelessly connect to the internet through the vehicle's private mobile network.EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, GVWR, 12,100 LBS. (5488 KG) WITH SINGLE REAR WHEELS, REAR AXLE, 3.42 RATIO, WHEELS, 20" (50.8 CM) MACHINED ALUMINUM WHEEL, TIRES, LT275/65R20