2026 GMC Sierra 2500

The 2026 GMC Sierra 2500HD AT4 is a rugged and capable pickup that's ready to take on any adventure. Powered by the renowned Duramax 6.6L V8 Turbodiesel engine, this Sierra delivers an impressive 470 horsepower and 975 lb-ft of torque, providing the muscle you need to tackle tough jobs and terrain. - 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) - 10-Speed Automatic Transmission - 4-Wheel Drive Designed for off-road adventures, the Sierra 2500HD AT4 comes equipped with an array of rugged features, including: - Off-Road Suspension - 2-Speed Active Transfer Case - Hill Descent Control - Skid Plates - Off-Road High Clearance Steps Inside, you'll find premium amenities like heated and ventilated leather seats, a Bose premium audio system, and a 15-inch Head-Up Display to keep you informed and connected on the go. The Sierra 2500HD AT4 also offers advanced safety technologies like Automatic Emergency Braking, Forward Collision Alert, and Rear Cross Traffic Alert to give you added peace of mind. With its powerful performance, capable off-road features, and premium interior, the 2026 GMC Sierra 2500HD AT4 is the ultimate truck for those who demand the best. Visit our dealership today to experience the difference for yourself. Why buy from Greg Lair GMC? It's a great question with an even better answer! We've been a local fixture in the Panhandle for over 40 years, putting customers from Amarillo and the Panhandle first every single day. We set ourselves apart as the home of the FREE Lifetime Powertrain Warranty on all inventory under 100,000 miles. From our hassle-free buying process to our thorough multi-point inspections by Certified GM Technicians, we make sure your next vehicle is safe, reliable, and ready for the road. Stop by today and see the Greg Lair difference for yourself!.