Performance
The 2025 Sierra 3500HD offers two formidable engine choices. The standard 6.6-liter V8 gas engine delivers an impressive 401 horsepower and 464 pound-feet of torque, providing ample power for demanding jobs. For those seeking maximum capability, the available Duramax 6.6-liter Turbo-Diesel V8 cranks out a massive 470 horsepower and 975 pound-feet of torque, allowing the Sierra 3500HD to tow up to 36,000 pounds when properly equipped. Paired with the Allison 10-speed automatic transmission, this heavy-duty pickup delivers seamless power delivery and confident control. Whether you're hauling a heavy load in Corning or towing a sizeable trailer through Painted Post, the 2025 GMC Sierra 3500HD has the brawn to handle the job easily.
Interior
Step inside the Sierra 3500HD's spacious cabin and enjoy an interior designed for comfort and functionality. Premium materials, intuitive controls, and advanced features create an inviting environment for long workdays or weekend getaways. Generous headroom and legroom accommodate passengers of all sizes, while available leather-appointed seating surfaces and heated front seats provide a touch of luxury.
Stay connected and entertained on the road with the Sierra 3500HD's infotainment system. The available 13.4-inch diagonal Premium GMC Infotainment System with Google built-in offers seamless access to navigation, voice assistance, and your favorite apps. Wireless Apple CarPlay and Android Auto compatibility allow you to integrate your smartphone effortlessly.
Exterior
The 2025 GMC Sierra 3500HD commands attention with its bold, muscular exterior design. This heavy-duty pickup exudes strength and confidence from the prominent grille adorned with the signature GMC logo to the chiseled bodyline and available LED lighting. Choose from a range of paint colors and wheel designs to personalize your Sierra 3500HD and make a statement on the streets of Watkins Glen.
The Sierra 3500HD's exterior is not just about style; it's also designed for functionality. The MultiPro Tailgate offers six versatile functions, making loading and unloading cargo a breeze. Accessing the cabin is effortless, even with your hands full, with the available power-retractable assist steps.
Technology
The 2025 GMC Sierra 3500HD is packed with advanced technology features that enhance your driving experience. The available Head-Up Display projects essential information, such as speed and navigation, onto the windshield, allowing you to keep your eyes on the road. The Rear Camera Mirror provides an unobstructed view of what's behind you, even with a fully loaded cargo bed.
Stay informed about your Sierra 3500HD's performance with the available 15-inch diagonal multicolor Head-Up Display. This innovative feature allows you to customize the information displayed, including towing metrics, fuel efficiency, and more. Whether navigating the streets of Sayre, PA, or hauling a heavy load, this technology keeps you in command.
Trim Levels
The 2025 GMC Sierra 3500HD is available in a range of trim levels to suit your preferences and needs. The base SLE trim offers a generously-equipped interior with essential features, while the SLT trim adds luxury amenities like leather-appointed seating and a Bose premium sound system.
For those seeking a rugged, off-road-ready pickup, the AT4 trim is the perfect choice. With off-road suspension, skid plates, and all-terrain tires, the AT4 is ready to tackle challenging terrain. The Denali trim represents the pinnacle of luxury, offering premium features like ventilated front seats, a power sunroof, and a Rear Camera Mirror.
Visit our Dealership
Experience the power and sophistication of the 2025 GMC Sierra 3500HD firsthand at Simmons Rockwell Buick GMC. Our knowledgeable sales staff is ready to answer your questions, discuss trim levels and options, and help you find the perfect heavy-duty pickup. Visit us in Elmira, NY, and embark on a test drive today. Discover why the Sierra 3500HD is the ultimate choice for those who demand the best performance, capability, and style.