Clean CARFAX. Summit White 2018 GMC Sierra 2500HD SLT 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Allison 1000 6-Speed Automatic, 4WD, Jet Black/Spice Red All Terrain Leather, 110-Volt AC Power Outlet, 18" Chromed Aluminum Wheels, 4-Wheel Disc Brakes, 4.2" Diagonal Color Display Driver Info Center, 4" Round Black Tubular Assist Steps (LPO), 6 Speakers, ABS brakes, Adjustable pedals, Air Conditioning, All-Terrain Package, All-Weather Floor Liner (LPO), Alloy wheels, AM/FM radio: SiriusXM, Assist Steps Not Desired or Alternate Step Desired, Auto-dimming door mirrors, Auto-Dimming Inside Rear-View Mirror, Auto-dimming Rear-View mirror, Automatic temperature control, Bluetooth® For Phone, Body Color Bodyside Moldings, Body-Color Door Handles, Body-Color Front Bumper, Bodyside moldings, Bose 6 Speaker Sound System, Brake assist, Bumpers: chrome, Camper & 5th Wheel Trailer Wiring Provisions, CD player, Chrome Bodyside Moldings, Chrome Door Handles, Chrome Mirror Caps, Chrome Power-Adjustable Heated Outside Mirrors, Chrome wheels, Color-Keyed Carpeted Floor Mats, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Delay-off headlights, Digital Steering Assist, Driver & Front Passenger Vanity Mirror Visors, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Dual-Zone Automatic Climate Control, Duramax Plus Package, Electric Rear-Window Defogger, Electronic Shift Transfer Case, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Exterior Parking Camera Rear, EZ-Lift & Lower Tailgate, Floor Mounted Console, Front 40/20/40 Split Bench Seat, Front anti-roll bar, Front Center Armrest w/Storage, Front dual zone A/C, Front fog lights, Front Full Feature Ventilated Bucket Seats, Front Halogen Fog Lamps, Front License Plate Kit, Front reading lights, Front wheel independent suspension, Fully automatic headlights, Garage door transmitter, GMC 4G LTE, GMC Connected Access, HD Radio, Heate