The 2025 GMC Sierra 2500HD Crew Cab Standard Box AT4 in Thunderstorm Grey Metallic with a striking Jet Black & Kalahari Accent interior is the perfect blend of rugged capability and refined luxury. Powered by a 6.6L Gasoline V8 engine paired with a smooth 10-speed automatic transmission, this heavy-duty truck delivers impressive power and performance, whether you’re towing, hauling, or navigating tough terrain. Designed with functionality in mind, the Sierra 2500HD AT4 comes equipped with a comprehensive trailering package, including hitch view, trailer side blind zone alert, and a trailer brake controller, ensuring confident and safe towing. The truck also features rear cross-traffic alert, HD surround vision, and automatic emergency braking to enhance safety. Front pedestrian braking and front and rear park assist offer added security in tight spaces. Inside, the cabin is tailored for comfort with heated and ventilated front seats, a heated steering wheel, and heated second-row seating to keep all passengers comfortable year-round. The interior also includes wireless device charging for added convenience and adaptive cruise control for long-distance driving ease. The Sierra 2500HD AT4 also features a power sunroof for fresh air and natural light, a rear camera mirror for better visibility, and a heads-up display to keep important information at eye level. The power sliding rear window and power retractable assist steps add convenience and functionality, making it easier to access the truck bed or get in and out of the cabin. Stock Number: T4191716 *AMVIC Licensed Dealer