The 2023 GMC Sierra 3500HD SLE Long Bed with the X31 Off-Road Package is the kind of truck that defines heavy-duty capability. Under the hood, the legendary 6.6-liter Duramax V8 Turbo-Diesel delivers massive torque and effortless power, making towing heavy trailers, hauling equipment, and climbing steep grades feel easy and controlled. Whether you’re pulling a fifth-wheel, a gooseneck, or a loaded flatbed, this Sierra is engineered to handle it with confidence. The X31 Off-Road Package adds skid plates, an off-road suspension, and hill descent control, giving you the freedom to take this truck far beyond the pavement and into the toughest job sites or backcountry terrain. Inside, the SLE cabin is spacious, comfortable, and built to work as hard as you do. Durable materials, supportive seating, and smart technology create a space that’s just as ready for long road trips as it is for early-morning job site runs. The long bed provides exceptional cargo room, giving you the space you need for oversized loads, tools, and equipment. On the road, the Sierra 3500HD feels planted and powerful, combining refined ride quality with unstoppable strength. It’s a truck that doesn’t just meet expectations, it exceeds them. The 2023 GMC Sierra 3500HD SLE Long Bed with the X31 Off-Road Package and Duramax 6.6L V8 is built for those who demand maximum capability, rugged durability, and dependable performance, day in and day out. This car has been professionally detailed, comes with FREE CAR WASHES, every Thursday for one year at our on site touch free car wash, and comes with a full tank of gas! At Small Town Auto Sales we have been helping people find the vehicle that is right for them since 1986! We allow you to fall in love with our vehicles in a LOW PRESSURE, STRESS-FREE environment. EXTENDED WARRANTIES AVAILABLE. We are a preferred dealer with all of the major credit unions and can help you get FINANCING. Trades welcome!