JUST SERVICED!, PRICED BELOW JD POWER CLEAN RETAIL!, PRICED TO SELL!, GREAT DEAL!, LEATHER!, HEATED AND COOLED SEATS!, BACKUP CAMERA!, MOONROOF!, BOSE PREMIUM AUDIO!, BLUETOOTH!, XM RADIO!, HEATED STEERING WHEEL!, POWER DRIVER SEAT!, DRIVER MEMORY SEAT!, POWER PASSENGER SEAT!, PEDAL MEMORY!, X31!, 4WD!, 20'' WHEELS!, REMOTE START!, FRONT AND REAR PARK ASSIST!, AUTOMATIC EMERGENCY BRAKING!, FORWARD COLLISION ALERT!, REAR CROSS TRAFFIC ALERT!, LANE DEPARTURE WARNING!, LANE KEEP ASSIST!, SPRAY IN BED LINER!, TOWING PACKAGE!, Sierra 1500 SLT, EcoTec3 5.3L V8, 8-Speed Automatic, 4WD, Dark Walnut/Slate w/Perforated Leather-Appointed Seat Trim, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Instrument Panel Power Outlet, 170 Amp Alternator, 20'' x 9'' Polished Aluminum Wheels, 3.23 Rear Axle Ratio, Auxiliary External Transmission Oil Cooler, Chrome Assist Steps, Chrome Grille, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Driver Alert Package I, Driver Alert Package II, Dual Exhaust w/Premium Tips, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Front Frame-Mounted Black Recovery Hooks, GMC 4G LTE, GMC Connected Access, HD Radio, Heated Driver & Front Passenger Seating, Heavy-Duty Rear Locking Differential, High-Capacity Air Filter, Hill Descent Control, Hitch Guidance, Hitch Guidance w/Hitch View, In-Vehicle Trailering App, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel & Telescoping Steering Column, Off-Road Suspension, OnStar & GMC Connected Services Capable, 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, Rear Dual USB Charging-Only Ports, Rear Wheelhouse Liners, Remote Vehicle Starter System, SLT Convenience Package, SLT Preferred Package, SLT Premium Plus Package, Spray-On Pickup Bed Liner w/GMC Logo, Steering Wheel Audio Controls, Theft Dete