The 2026 GMC Sierra 2500HD AT4 combines rugged capability with premium comfort in a bold Volcanic Red exterior. Built to handle demanding jobs and weekend adventures alike, this heavy-duty pickup brings an aggressive presence to the road while offering the refinement you want behind the wheel. The AT4 designation adds a distinctive touch of off-road-inspired style to an already impressive truck.Power comes from the Duramax 6.6L turbo-diesel engine, giving the Sierra 2500HD the strength and confidence needed for serious towing and hauling. A trailering package with trailer brake controller helps provide added control when you're connected to a trailer. Whether you're working hard or heading out for recreation, this Sierra is equipped to take on the task.Inside, heated and ventilated front seats provide year-round comfort, while the innovative GMC MultiPro Tailgate adds versatility at the rear. From its powerful diesel performance to its thoughtful features, this Sierra 2500HD AT4 is ready for whatever the day brings.Proudly serving McKinney, Allen, Plano, Frisco, The Colony and all of DFW and North Texas.
Engine: Duramax 6.6L V8 Turbodiesel
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