This 2025 GMC Sierra 3500HD Denali Ultimate is finished in white and is powered by a 6.6-liter Duramax turbo-diesel V8 producing 470 horsepower and 975 lb-ft of torque, paired with an Allison 10-speed automatic transmission and four-wheel drive. The configuration delivers the performance, refinement, and road presence expected from the Denali Ultimate specification while preserving the core character of the Sierra 3500HD lineup. The Denali Ultimate specification combines heavy-duty capability with GMC's highest level of luxury, featuring premium leather, open-pore wood and metal trim, power-adjustable seating, a large infotainment display, digital instrumentation, premium audio, smartphone integration, surround-view camera capability, and advanced trailering technology. Its reinforced frame, integrated trailer-brake systems, and Duramax-Allison powertrain are engineered for demanding towing and hauling. At Alpha Motor, we're committed to making your vehicle purchase simple, transparent, and enjoyable. Whether you're buying from across town or across the country, our team is here to provide a seamless experience from start to finish. We offer nationwide vehicle shipping, personalized assistance, competitive financing options, and dedicated support throughout every step of the process. Every vehicle in our inventory is carefully represented so you can shop with confidence. If you've been searching for the right vehicle, let Alpha Motor help make it yours. Contact our team today to request additional photos, videos, financing information, or a personalized shipping quote. Wherever you are in the United States, we're ready to deliver exceptional vehicles and outstanding customer service directly to your door.