Experience the pinnacle of power and capability with the 2026 GMC Sierra 2500HD AT4. This exceptional heavy-duty pickup is engineered to conquer any terrain, whether you're tackling tough job sites or embarking on thrilling off-road adventures.<br><br>- 6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible) (Includes (K05) Engine Block Heater) (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm)<br>- AT4 Preferred Package<br>- Gooseneck/5th Wheel Prep Package<br>- Technology Package<br>- X31 Off-Road Package<br><br>Beneath the bold, rugged exterior lies a meticulously engineered powertrain that delivers unparalleled performance. The Duramax 6.6L V8 Turbodiesel engine, paired with a 10-speed automatic transmission, unleashes an astonishing 470 horsepower and an astounding 975 lb-ft of torque, ensuring you can tackle even the most demanding tasks with ease.<br><br>The Sierra 2500HD AT4 is more than just a powerful workhorse; it's a true off-road champion. The X31 Off-Road Package, complete with an off-road suspension, traction control, and hill descent control, allows you to conquer the toughest terrain with confidence. The Gooseneck/5th Wheel Prep Package further enhances the Sierra's versatility, making it the perfect companion for your towing and hauling needs.<br><br>Comfort and convenience are equally impressive in the Sierra 2500HD AT4. The Bose Premium 7-Speaker Sound System, dual-zone automatic climate control, and heated and ventilated front seats ensure a premium driving experience. The Technology Package, with features like the Head-Up Display and Wireless Charging, keeps you connected and informed on the road.<br><br>Safety is also a top priority, with the Sierra 2500HD AT4 offering a suite of advanced driver-assistance technologies. From Automatic Emergency Braking to Lane Departure Warning, you can navigate with confidence, knowing your vehicle has your back.<br><br>Whether you're tackling tough jobs or seeking adventure, the 2026 GMC Sierra 2500HD AT4 is the ultimate heavy-duty pickup that delivers uncompromising power, capability, and refinement. Experience the difference for yourself and schedule a test drive today. Price includes: $500 - Buick & GMC Consumer Cash Program. Exp. 03/02/2026

Bill Kay Buick GMC
2300 Ogden Ave
Downers Grove, IL 60515

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: 2500
Side Air Bag Locations: 1st Row (Driver and Passenger)
Trim: AT4
Turbo: Yes
Vehicle Descriptor: 1GT4UPEY*TF
Vehicle Type: TRUCK