The 2024 GMC Sierra 2500HD AT4X offers an uncompromising fusion of extreme off-road capability and heavy-duty strength, finished in a rugged Thunderstorm Gray exterior. Powered by the legendary Duramax® 6.6L V8 turbodiesel engine delivering 470 horsepower and 975 lb-ft of torque, this top-tier workhorse provides relentless towing power and trail-conquering performance through its heavy-duty 10-speed Allison® automatic transmission and an advanced 4WD system with a two-speed transfer case, front and rear electronic locking differentials, and an exclusive AT4X off-road suspension for supreme capability in the most demanding terrain.

The purpose-built AT4X trim outfits the Sierra with aggressive 18-inch machined aluminum wheels wrapped in Goodyear Wrangler DuraTrac mud-terrain tires, a 1.5-inch factory suspension lift with Multimatic DSSV™ dampers, and unique front and rear steel bumpers with integrated recovery hooks. Inside, you'll find premium leather-appointed seating surfaces with heated, ventilated, and massaging front seats and AT4X embroidery, a leather-wrapped steering wheel, and durable interior accents with all-weather floor liners. The spacious Crew Cab offers best-in-class interior room, along with dual-zone automatic climate control and a premium 12-speaker Bose® audio system with a 13.4-inch touchscreen.

Advanced off-road technology features include the GMC Infotainment System with Google built-in, wireless Apple CarPlay® and Android Auto™, and a 4G LTE Wi-Fi hotspot. The Sierra 2500HD AT4X also boasts standard underbody skid plates, a spray-in bedliner, an Advanced Trailering System, and GMC Pro Safety Plus with HD Surround Vision for ultimate control, confidence, and capability on any terrain.

Engineered for those who demand extreme off-road prowess with heavy-duty capability, this Sierra 2500HD AT4X delivers a formidable 18,000 pounds of maximum towing capacity when properly equipped, setting a new benchmark in the heavy-duty off-road truck segment.

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