Introducing the 2026 GMC Sierra 1500 AT4, the ultimate blend of rugged capability and refined luxury. This 4WD crew cab truck features a striking Onyx Black exterior that commands attention on any terrain. Inside, you'll find a sophisticated cabin adorned with Jet Black leather seats accented by Kalahari highlights, ensuring a premium experience for both driver and passengers. Powered by the robust Duramax 3L I-6 diesel engine, this powerhouse delivers an impressive 305 horsepower, enhancing both performance and efficiency. The advanced direct injection and intercooled turbo setup provides exceptional torque for tackling challenging landscapes, while the DOHC and variable valve control ensure smooth and responsive handling. Whether you're navigating city streets or off-road adventures, the GMC Sierra 1500 AT4 is engineered for versatility and comfort. With its spacious crew cab design, you'll enjoy ample room for passengers and cargo alike. Discover the perfect combination of strength, style, and sophistication with the 2026 GMC Sierra 1500 AT4. Elevate your driving experience today!