New 2026 Gmc Sierra 2500 HD AT4

The 2026 GMC Sierra 2500HD AT4, available now at Sam Boswell Buick GMC, is a heavy-duty off-road pickup truck engineered for exceptional capability, rugged performance, and professional-grade strength. With a high-output engine, advanced four-wheel-drive system, and substantial towing and payload capacity, the Sierra 2500HD AT4 can handle long hauls, job site demands, and off-road terrain with ease. Its aggressive exterior features include a signature GMC grille, skid plates, off-road suspension, all-terrain tires, and premium alloy wheels--combining durability and modern design for drivers seeking a versatile full-size heavy-duty truck. Inside the 2026 Sierra 2500HD AT4, you'll find a spacious and refined cabin built with high-quality materials, ergonomic seating, and advanced technology for connectivity and comfort. The large touchscreen infotainment system supports Apple CarPlay, Android Auto, and wireless smartphone integration, while driver-assistance features such as blind-spot monitoring, adaptive cruise control, lane-keep assist, and multiple camera views enhance safety and confidence on every drive. Visit Sam Boswell Buick GMC today to explore the 2026 GMC Sierra 2500HD AT4 and experience a heavy-duty pickup truck that merges serious off-road capability, luxury comfort, and modern technology in one powerful vehicle.