2025 GMC Sierra 3500HD AT4

Meet the 2025 GMC Sierra 3500HD AT4 4WD LWB a commanding work truck built for serious hauling and premium capability. Finished in crisp White with a heavy-duty Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission, this long wheelbase pickup delivers the power and traction you need for any job. With just over 17,400 miles, this truck remains virtually new, backed by the confidence of a proven platform and meticulous engineering.Key Features:- Duramax 6.6L V8 Turbodiesel with 220-amp alternator- Gooseneck/5th wheel prep package- Engine block heater for cold-weather reliability- Trailer tire pressure monitor sensors- Black power-retractable assist steps- AT4 Premium Plus Package- Premium Bose 7-speaker sound system with SiriusXM- Multicolor 15" head-up display- Advanced safety suite: automatic emergency braking, rear cross traffic alert, lane departure warning- Heated and ventilated leather front seats with 10-way power adjustmentThis Sierra showcases the AT4's premium refinement with a full suite of comfort and convenience technologies. The cabin features dual-zone automatic climate control, wireless smartphone projection, a wireless charging pad, and a 13.4" GMC information display. Outside, LED lighting, rain-sensing wipers, and deep-tinted glass enhance visibility and durability. Whether you're towing, hauling, or commanding the road, this truck combines capability with luxury appointments rarely found in the heavy-duty class.Experience this exceptional truck in person. Contact us today to schedule a showroom visit and discover what sets this AT4 apart.