Engineered for the most demanding jobs, the 2025 GMC Sierra 2500HD AT4X is a true workhorse built to tackle any challenge. Powered by the robust Duramax 6.6L V8 Turbodiesel engine, this 4WD beast delivers an incredible 975 lb-ft of torque, providing the muscle you need to conquer the toughest terrain.- UPFITTER SWITCH KIT (5)- ENGINE BLOCK HEATER- DUAL 220-AMP/170-AMP AUXILIARY ALTERNATORS- AT4X AEV EDITION- SNOW PLOW PREP/CAMPER PACKAGE- GOOSENECK/5TH WHEEL PREP PACKAGEElevating your off-road capabilities, the AT4X AEV Edition includes premium features like heavy-duty AEV stamped steel bumpers, 18 AEV Salta Black Gloss Aluminum wheels, and AEV-branded floor liners. With the Snow Plow Prep and Gooseneck/5th Wheel Prep Packages, this Sierra is ready to handle the toughest jobs, from plowing snow to towing heavy-duty trailers.Indulge in the premium Bose 12-speaker audio system, enjoy the convenience of wireless charging, and stay connected with the latest GMC Infotainment technology. The 15 Head-Up Display and suite of advanced safety features, including Automatic Emergency Braking and Rear Cross Traffic Alert, provide added confidence and peace of mind.Whether you're hauling heavy loads, tackling rugged terrain, or seeking uncompromising capability, the 2025 GMC Sierra 2500HD AT4X is the ultimate work truck built to exceed your expectations.