2020 GMC Sierra 2500HD AT4

The 2020 Sierra 2500HD is GMC's heavy-duty pickup, the one you cross-shop with the Ford Super Duty and Ram 2500 when you need serious towing and hauling. It drives like a big truck, with a commanding view and a ride that settles down once you've got weight in the bed. The cabin is roomy and quiet, and the available Denali trim adds upscale materials and heated, ventilated seats. You can get it as a regular, double, or crew cab, and the available MultiPro tailgate makes reaching into the bed a lot easier. The AT4 is the off-road-oriented Sierra 2500HD, adding skid plates, hill descent control, and Rancho shocks over the SLT. Its 6.6L I8 makes 401 horsepower and 464 lb-ft of torque, routed through a six-speed automatic and four-wheel drive that handle heavy loads without breaking a sweat. The AT4 rides higher than other trims, which helps off-road but means you'll notice a bit more body roll on pavement.