2026 GMC Sierra 2500 Denali

The 2026 Sierra 2500 is GMC's heavy-duty pickup, built for serious towing and hauling with a range of trims from work-oriented Pro to luxury Denali Ultimate. It competes head-to-head with the Ford F-250 Super Duty and Ram 2500, offering comparable capability with a more premium cabin in upper trims. The Sierra 2500 drives with the confidence of a true heavy-duty truck, offering strong acceleration and stable towing manners, though its size demands respect in tight spots. Cabin space varies by cab configuration, but the Denali trims bring leather upholstery, heated and ventilated seats, and a large touchscreen with wireless smartphone integration. The Denali is the luxury-focused trim, where you get a premium cabin with real wood and leather while the AT4 is more about off-road hardware. The 6.6L V8 makes 401 horsepower and 464 lb-ft of torque, paired with a ten-speed automatic and four-wheel drive, giving you confident passing power even with a heavy trailer. It comes standard with the MultiPro tailgate, a six-way tailgate that works as a step, a load stop, and a standing workstation.