"Built to Work, Styled to Impress This 2018 GMC Sierra 3500 SLT is the perfect combination of heavy-duty capability and upscale refinement. Powered by the legendary 6.6L Duramax Turbo-Diesel, it delivers serious towing power, torque, and long-haul reliabilitywhether you're pulling a trailer, hauling gear, or heading off the beaten path. The SLT trim brings premium touches to this powerhouse, including leather-appointed seating, advanced infotainment, and a quiet, comfortable cabin that makes every drive feel first-class. With its bold exterior styling, chrome accents, and commanding stance, this truck looks just as good as it performs. Whether you're a contractor, adventurer, or someone who simply appreciates a truck that can do it all, this Sierra 3500 SLT is ready to go to work and look good doing it. Call us now 360-794-1155 speedwaychevrolet.com Allison 1000 6-Speed Automatic, 4WD, Jet Black w/Leather-Appointed Seat Trim, 110-Volt AC Power Outlet, 150 Amps Alternator, 4.2"" Diagonal Color Display Driver Info Center, Auto-Dimming Inside Rear-View Mirror, Chrome Bodyside Moldings, Chrome Door Handles, Chrome Power-Adjustable Heated Outside Mirrors, Color-Keyed Carpeted 1st & 2nd Row Floor Mats, Color-Keyed Carpeting Floor Covering, Deep-Tinted Glass, Digital Steering Assist, Driver & Front Passenger Visors, Dual-Zone Automatic Climate Control, Electric Rear-Window Defogger, Electronic Shift Transfer Case, EZ-Lift & Lower Tailgate, Front Halogen Fog Lamps, GMC 4G LTE, GMC Connected Access, HD Radio, Leather-Wrapped Steering Wheel, LED Cargo Box Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Power Adjustable Pedals, Power Windows, Preferred Equipment Group 4SA, Rear 60/40 Folding Bench Seat (Folds Up), Remote Keyless Entry, Remote Locking Tailgate, Remote Vehicle Starter System, Single-Slot CD/MP3 Player, Steering Wheel Audio Controls, Trailering Equipment, Unauthorized Entry Theft-Deterrent System, Universal Home Remote. Clean CARFAX. Negotiable $200 documentary fee added to purchase price or capitalized cost. DRIVE WITH CONFIDENCE The LJ WAY! Most used vehicles include a 6 Month / 6000 Mile Warranty, plus we offer a 7-Day Exchange! Learn more: https://www.speedwaychevrolet.com/drive-with-confidence."