This all-new 2026 GMC Sierra 1500 AT4 Diesel just landed at MacMaster Chevrolet, right here in London Ontario, bringing serious capability and premium refinement to the local truck market.Built for real life in Southwest Ontario, this Sierra is perfect for tackling snowy winter roads, hauling equipment across job sites, or heading out for weekend escapes toward Lake Huron. With its diesel torque and off-road-ready AT4 suspension, it’s designed to handle everything from city streets to muddy backroads with confidence.Feature Focus: ProGrade Trailering SystemThe ProGrade Trailering System transforms the Sierra into a smarter towing machine. It integrates advanced camera views, trailer profiles, and in-vehicle towing guidance to simplify hitching, hauling, and monitoring your load.When you’re towing through busy London traffic or merging onto Highway 401, the system helps reduce stress by giving you real-time visibility around your trailer. From hitch alignment to lane changes, it’s designed to make even heavy towing feel controlled and predictable.For drivers in Southwest Ontario who regularly tow boats, trailers, or work equipment, this system adds confidence where it matters most—on unpredictable roads, in tight spaces, and during long-distance hauls.Visit us at our Driver Lane Show room or call[Phone Removed] to schedule your test drive