Conquer the Canadian Terrain with the 2026 GMC Sierra 3500HD AT4: Power, Precision, and Premium Comfort for the Ultimate Driving Experience

Discover the 2026 GMC Sierra 3500HD AT4, a powerhouse designed for those who demand more from their truck. With its robust 6.6L Duramax Turbo-Diesel V8 engine, delivering an impressive 470 horsepower and 975 lb-ft of torque, this truck is built to tackle any challenge. The 10-speed automatic transmission ensures smooth power delivery, while the 4x4 drivetrain and off-road high clearance step provide unmatched capability on rugged Canadian landscapes.

Safety is paramount with features like Front Collision Mitigation, Blind Spot Monitor, and Lane Departure Warning, ensuring peace of mind on every journey. The AT4 Premium Plus Package adds luxury with leather seats, heated and cooled front seats, and a power sunroof, making long drives a pleasure. Stay connected with the 13.4" diagonal premium GMC infotainment system, featuring Google built-in apps, wireless Android Auto, and Apple CarPlay.

The Gooseneck/5th Wheel Prep Package enhances towing capacity, making it ideal for hauling heavy loads. With its integrated tailgate step and bed liner, the Sierra 3500HD AT4 is as practical as it is powerful, ready to redefine your driving experience.