Elevate your driving experience with the 2026 GMC Sierra 3500HD Denali Ultimate, a true powerhouse built to conquer any task. This exceptional heavy-duty pickup boasts a commanding presence and unparalleled capability, making it the ultimate choice for those who demand the best.<br><br>Highlighted features include:<br>• GMC Sierra 3500HD Denali Ultimate<br>• Duramax 6.6L V8 Turbodiesel engine with 10-Speed Automatic transmission and 4WD<br>• Gooseneck/5th Wheel Prep Package, Snow Plow Prep/Camper Package, and Technology Package<br>• Bose Premium Series 12-Speaker System, SiriusXM with 360L Trial Subscription, and Steering Wheel Audio Controls<br>• Electric Rear-Window Defogger, 120-Volt Bed Mounted Power Outlet, and 120-Volt Instrument Panel Power Outlet<br><br>The 2026 GMC Sierra 3500HD Denali Ultimate is more than just a truck; it's a statement of your unwavering commitment to excellence. With its striking Onyx Black exterior and a host of premium features, this vehicle is designed to elevate your driving experience to new heights.<br><br>Imagine the power and control at your fingertips as you command the Duramax 6.6L V8 Turbodiesel engine, effortlessly tackling any terrain or towing challenge that comes your way. The 10-Speed Automatic transmission and 4WD system ensure seamless performance and uncompromising capability, making this Sierra 3500HD the ultimate workhorse.<br><br>But the Denali Ultimate isn't just about raw power; it's about refined luxury and advanced technology as well. The Bose Premium Series 12-Speaker System delivers an immersive audio experience, while the SiriusXM with 360L Trial Subscription keeps you entertained and informed on the go. The Steering Wheel Audio Controls allow you to effortlessly manage your music, calls, and more without taking your hands off the wheel.<br><br>Comfort and convenience are also paramount in the 2026 GMC Sierra 3500HD Denali Ultimate. The Electric Rear-Window Defogger, 120-Volt Bed Mounted Power Outlet, and 120-Volt Instrument Panel Power Outlet ensure you have the resources to power your tools, accessories, and more, wherever your adventures take you.<br><br>This exceptional vehicle is more than just a truck; it's a testament to your dedication, your ambition, and your unwavering commitment to excellence. Experience the unparalleled power, technology, and luxury of the 2026 GMC Sierra 3500HD Denali Ultimate. Visit Castle Buick GMC today and let us help you discover the perfect vehicle to conquer your next challenge.<br><br>Welcome to Castle Buick GMC, your trusted Buick and GMC dealership in North Riverside, IL, proudly serving North Riverside, Cicero, Chicago, and surrounding suburbs. Explore our full lineup of new Buick vehicles, including the Buick Envista, Encore GX, Envision, and the three-row Enclave.<br><br>On the GMC side, we offer a wide selection of new SUVs and trucks, including the GMC Terrain, Acadia, Yukon, Sierra 1500, and heavy-duty Sierra HD. Each model is available in a variety of trims to match your style and performance needs.<br><br>At Castle Buick GMC, we provide competitive pricing, flexible financing options, and a friendly, expert sales team ready to help you find the perfect new Buick or GMC vehicle. Browse our new Buick and GMC inventory online or visit our North Riverside showroom today. Contact our sales team at (708)-853-3542. Price does not include tax, title, and a doc fee of $367.70.

Castle Buick GMC
7400 Cermak Rd
North Riverside, IL 60546

Additional Error Text: The Model Year decoded for this VIN may be incorrect. If you know the Model year, please enter it and decode again to get more accurate information.
Antilock Braking System Abs: Standard
Body Class: Pickup
Brake System Type: Hydraulic
Curtain Air Bag Locations: All Rows
Displacement Cc: 6600.0
Displacement Ci: 402.7567110252330741
Displacement L: 6.6
Drive Type: 4WD
Engine Configuration: V-Shaped
Engine Model: L5P
Engine Number Of Cylinders: 8
Front Air Bag Locations: 1st Row (Driver and Passenger)
Fuel Type Primary: Diesel
Gross Vehicle Weight Rating From: Class 3: 10,001 - 14,000 lb (4,536 - 6,350 kg)
Gross Vehicle Weight Rating To: Class 3: 10,001 - 14,000 lb (4,536 - 6,350 kg)
Other Engine Info: DI, DURAMAX, GEN 5 VAR. 1
Other Restraint System Info: AY0 - Active Manual Belts
Seat Belt Type: Manual
Series: 3500
Side Air Bag Locations: 1st Row (Driver and Passenger)
Trim: Denali Ultimate
Turbo: Yes
Vehicle Descriptor: 1GT4UYEY*TF
Vehicle Type: TRUCK