VEHICLE IS IN TRANSIT TO WOLFE GMC BUICK – CONTACT WOLFE GMC BUICK FOR AVAILABILITY AND ESTIMATED ARRIVAL TIME. The 2025 GMC Sierra 3500HD Crew Cab Standard Box Denali in Onyx Black is the perfect blend of premium luxury, outstanding performance, and cutting-edge technology. Powered by the formidable 6.6L Duramax Turbo-Diesel engine paired with a 10-speed automatic transmission, this heavy-duty truck is engineered for optimal towing, hauling, and overall capability, ready to handle the toughest tasks. The Denali Reserve Package enhances the truck’s luxurious appeal with a power sunroof, rear camera mirror, and heads-up display, providing a premium driving experience with both style and convenience. Safety is a key focus with the Sierra 3500HD, featuring the Sierra HD Pro Safety package. This includes trailer side blind zone alert, rear cross traffic alert, HD surround vision, front and rear park assist, automatic emergency braking, forward collision alert, front pedestrian braking, and lane departure warning, ensuring you’re always aware of your surroundings and protected on the road. Inside, the 2025 Sierra 3500HD Denali boasts a high-tech, comfortable cabin with a 13.4 touchscreen featuring navigation, Bluetooth, Wireless Apple CarPlay & Android Auto, and Wireless Device Charging, so you’re always connected and charged. The power sliding rear window, heated and ventilated front seats, and heated steering wheel provide comfort year-round. The heated second-row seats ensure that passengers in the back are just as comfortable, no matter the journey. The truck’s bold design is highlighted by 20 aluminum wheels and chrome assist steps, while the power folding/extending heated outside mirrors enhance convenience. The innovative GMC MultiPro tailgate adds multiple functions for easier loading, unloading, and hauling, making your work and recreational tasks simpler. Stock Number: T4222137 *AMVIC Licensed Dealer