The 2024 GMC Sierra 2500HD AT4 delivers the capability and refinement you need for serious work and genuine adventure. Engineered with a Duramax 6.6L V8 Turbodiesel engine producing 470 horsepower and 975 lb-ft of torque, this truck handles demanding tasks with confidence and efficiency.- Power-Retractable Black Assist Steps with LED lighting- Engine Block Heater- 220-Amp Alternator- AT4 Premium Plus Package- 22 Gloss Black Aluminum Wheels- Body Color Wheel Arch Moldings- LT265/60R22 E All-Terrain Tires- Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin trailer harness- Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic and 4WD- Bose Premium 7-Speaker Sound System with SiriusXM 360L- Technology Package including Apple CarPlay/Android Auto and GMC Connected Services- Multicolor 15 Head-Up Display and HD Surround Vision- Power Sunroof- Heated and ventilated front seats with 10-way power adjusters- Off-Road Suspension and Hill Descent ControlThe AT4 Premium Plus Package brings together premium comfort and advanced capability. You'll appreciate the power sunroof, heated rear seats, and heated steering wheel for year-round comfort. The GMC Infotainment System with wireless phone projection and Apple CarPlay keeps you connected safely, while the Bose audio system ensures quality throughout every drive.Advanced technology features on this Sierra include automatic emergency braking, lane departure warning, rear cross-traffic alert, and adaptive cruise control. The integrated trailer brake controller and hitch guidance system with hitch view camera make towing manageable, whether you're hauling a gooseneck, 5th wheel, or standard trailer. HD surround vision and the bed view camera with trailer camera provisions give you complete sight lines around the truck.Built for the job at hand, this AT4 comes standard with the 2-speed active transfer case and off-road suspension. The spray-on bedliner with AT4 logo protects your cargo, while the heavy-duty 80-amp battery and 220-amp alternator ensure reliable starting and power for auxiliary equipment. The all-terrain tires are ready for serious terrain, and the high-clearance step makes entry and exit convenient even with a loaded bed.The white exterior on this truck stands out cleanly on the road or at the job site. The gloss black header grille, smoked amber roof marker lamps, and body-color wheel arch moldings give the AT4 a commanding presence. Heated power door mirrors and automatic high-beam headlights enhance visibility in all conditions.This 2024 Sierra 2500HD AT4 represents a serious investment in capability and comfort. Whether you're managing a fleet, towing heavy loads, or tackling off-road terrain, this truck is engineered to perform. We invite you to experience the power, technology, and refinement of this AT4 firsthand at our dealership.