2026 GMC Sierra 2500 4WD Crew Cab 159" AT4X 

in Brampton 

The 2026 GMC Sierra 2500HD AT4X Crew Cab commands attention in a bold Summit White finish that reflects its uncompromising off-road capability and premium craftsmanship.

Its exclusive AT4X styling, aggressive front fascia, LED lighting, skid plates, and commanding stance create an unmistakable presence that's engineered to conquer the toughest terrain while delivering luxury-level refinement. Riding on aggressive all-terrain tires with advanced off-road hardware, the AT4X is built to go farther than ordinary heavy-duty trucks.

Power comes from a 6.6 L Duramax Turbo-Diesel V8 engine paired with a 10-speed Allison automatic transmission and advanced four-wheel drive. The result is incredible pulling power, exceptional off-road capability, and smooth, controlled performance whether climbing rocky trails or towing heavy equipment.

Inside, the cabin delivers GMC's most capable truck with premium comfort. Full-grain leather seating, heated and ventilated front seats with massage functionality, heated rear seats, a heated steering wheel, and premium interior finishes create a first-class driving experience. The infotainment system integrates Google built-in navigation, wireless Apple CarPlay and Android Auto, Bluetooth hands-free functionality, wireless charging, and a Bose premium audio system. A multiview camera system with off-road camera views, advanced trailering technology, and GMC Pro Safety Plus ensure confidence on every journey.

Make your way into Gateway Chevrolet Buick GMC and see this 2026 GMC Sierra 2500HD AT4X today!

At Gateway Chevrolet, get stress-free buying with market based pricing, full disclosure & transparency, and nationwide shipping. All trade-ins are welcome & we provide financing to those w/no credit, bad credit, or new to the country. Explore our selection of quality used cars, trucks, and SUVs at Gateway Chevrolet Buick GMC. With over 45 vehicles in stock and easy online trade-in valuation, finding your next ride has never been easier.