Conquer the Canadian Terrain with the 2026 GMC Sierra 3500HD AT4: Rugged Power, Unmatched Comfort, and Advanced Safety for the Ultimate Driving Experience

Discover the pinnacle of strength and sophistication with the 2026 GMC Sierra 3500HD AT4. This beast is engineered for those who demand more from their truck, offering a robust 6.6L V8 engine delivering 401 horsepower and 464 lb-ft of torque, ensuring you have the power to tackle any challenge. The Gooseneck/5th Wheel Prep Package makes towing a breeze, while the integrated tailgate step and running boards provide easy access to your cargo. Inside, indulge in the luxury of leather seats with heating and cooling options, ensuring comfort in any Canadian climate. The advanced 13.4" diagonal premium GMC infotainment system with Google built-in apps keeps you connected and entertained, featuring wireless Android Auto and Apple CarPlay compatibility. Safety is paramount with features like Blind Spot Monitor, Lane Departure Warning, and Front Collision Mitigation, offering peace of mind on every journey. The AT4 Preferred Package adds convenience with a rear sliding power window and roof marker lamps, enhancing both style and functionality. Whether you're navigating city streets or rugged trails, the Sierra 3500HD AT4 is your ultimate companion, offering unparalleled performance and luxury.