2018 GMC Sierra 1500 4WD Double Cab. All prices include $500 Race for savings cash. Recent Arrival! Clean CARFAX. 2018 GMC Sierra 1500 EcoTec3 4.3L V6 Flex Fuel 6-Speed Automatic Electronic with Overdrive 4WD Double Cab Dark Slate Metallic 6-Speed Automatic Electronic with Overdrive, 4WD, Dark Ash Seats With Jet Black Interior Accents Cloth, 110-Volt AC Power Outlet, 150 Amp Alternator, 3-Passenger Full-Width Folding Rear Bench Seat, 3.42 Rear Axle Ratio, 3.5" Diagonal Monochromatic Display DIC, 4-Wheel Disc Brakes, 40/20/40 Front Split Bench Seat, 6 Speakers, 6-Speaker Audio System, ABS brakes, Air Conditioning, AM/FM radio, Black Manual Outside Mirrors, Black Power Adjustable Heated Outside Mirrors, Body Color Bodyside Moldings, Body Color Door Handles, Body Color Grille Surround, Body Color Lower Front Bumper, Body Color Rear Bumper w/Cornersteps, Body-Color Mirror Caps, Brake assist, Bumpers: chrome, Cloth Seat Trim, Color-Keyed Carpeting, Deep-Tinted Glass, Delay-off headlights, Driver door bin