Discover the ultimate off-road companion in the 2026 GMC Sierra 1500 AT4. This exceptional truck is engineered to conquer any terrain, delivering uncompromising capability and refined sophistication.<br><br>Featuring a powerful EcoTec3 6.2L V8 engine with 420 horsepower and 460 lb-ft of torque, the Sierra 1500 AT4 is built to take on the toughest challenges. Paired with a 10-speed automatic transmission and advanced 4WD system, this truck provides effortless power and exceptional control, whether navigating rugged off-road trails or tackling your daily driving duties.<br><br>• GMC Sierra for sale<br>• EcoTec3 6.2L V8 (420 hp, 460 lb-ft of torque)<br>• AT4 Preferred Package<br>• AT4 Premium Package<br>• Technology Package<br>• Premium Bose 7-Speaker Sound System<br>• Wireless Apple CarPlay/Wireless Android Auto<br>• Multicolor 15 Diagonal Head-Up Display<br><br>Beyond its impressive performance, the Sierra 1500 AT4 is equipped with a wealth of premium features designed to elevate your driving experience. Indulge in the comfort of heated and ventilated leather-appointed seats, enjoy the convenience of a power sliding rear window, and stay connected with the advanced GMC Infotainment Audio System.<br><br>For those who demand more from their truck, the Sierra 1500 AT4 delivers. With its off-road-tuned suspension, skid plates, and red recovery hooks, this vehicle is ready to tackle the toughest terrain. The Bed View Camera and Trailer Camera Provisions further enhance your capability, making it easier to navigate tight spaces and confidently tow your gear.<br><br>Whether you're embarking on an off-road adventure or simply seeking a capable and well-equipped daily driver, the 2026 GMC Sierra 1500 AT4 is the perfect choice. Discover the perfect blend of power, technology, and refinement that will elevate your driving experience.<br><br>Welcome to Castle Buick GMC, your trusted Buick and GMC dealership in North Riverside, IL, proudly serving shoppers from Cicero, Chicago, Berwyn, Oak Park, Brookfield, and nearby suburbs. If you are searching for new Buick vehicles for sale near me or new GMC trucks and SUVs near Chicago, you are in the right place.<br><br>Explore our lineup of new Buick Envista, Encore GX, Envision, and Enclave models—perfect for drivers seeking comfort, technology, and exceptional value.<br><br>On the GMC side, shop our selection of GMC Terrain, Acadia, Yukon, Sierra 1500, and Sierra HD trucks, with multiple trims and configurations to match your performance and towing needs.<br><br>At Castle Buick GMC, you will enjoy competitive pricing, easy financing, and a knowledgeable sales team ready to help you find the right vehicle. Browse our new Buick and GMC inventory online, schedule a test drive, or visit our North Riverside showroom today.<br><br>Contact our sales team at (708) 853-3542.<br>Price does not include tax, title.

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: 6200.0
Displacement Ci: 378.3472133873401605
Displacement L: 6.2
Drive Type: 4WD
Engine Configuration: V-Shaped
Engine Model: L87
Engine Number Of Cylinders: 8
Front Air Bag Locations: 1st Row (Driver and Passenger)
Fuel Type Primary: Gasoline
Gross Vehicle Weight Rating From: Class 2F: 7,001 - 8,000 lb (3,175 - 3,629 kg)
Gross Vehicle Weight Rating To: Class 2F: 7,001 - 8,000 lb (3,175 - 3,629 kg)
Other Engine Info: DI DFM, ALUM, GEN 5
Other Restraint System Info: AY0 - Active Manual Belts
Seat Belt Type: Manual
Series: 1500
Side Air Bag Locations: 1st Row (Driver and Passenger)
Trim: AT4
Vehicle Descriptor: 3GTUUEEL*TG
Vehicle Type: TRUCK