
The 2025 GMC Sierra 2500HD Denali Ultimate in Onyx Black with a rich Alpine Umber leather interior delivers premium luxury and heavy-duty capability. Powered by the legendary Duramax 6.6L V8 Turbo-Diesel paired with the Allison 10-speed automatic transmission, this truck is built for serious towing and performance. It features the Denali Ultimate package, 13.4 GMC infotainment system with Google built-in, 15 head-up display, Bose 12-speaker premium audio, adaptive cruise control, HD surround vision, and wireless Apple CarPlay & Android Auto.
Comfort and convenience include heated and ventilated front seats, heated rear seats, 16-way power driver seat, power retractable assist steps, power sliding rear window, wireless charging, and dual-zone automatic climate control. The exterior stands out with 20 ultra-bright machined aluminum wheels, animated LED projector headlamps, spray-on bedliner, LED cargo lighting, and the versatile GMC MultiPro tailgate.
Equipped with Sierra HD Pro Safety, trailer side blind zone alert, rear cross traffic alert, automatic emergency braking, and a full trailering package with hitch guidance and trailer app, this Sierra Denali Ultimate combines luxury, technology, and heavy-duty strength in one exceptional truck.





