2025 GMC Sierra 3500HD Denali Ultimate 4WD Duramax
Built for buyers who demand the best, this Onyx Black Sierra 3500HD Denali Ultimate delivers unmatched heavy-duty capability with first-class refinement. Powered by the legendary Duramax 6.6L Turbo-Diesel paired with a 10-speed Allison transmission, itâs ready for towing, hauling, and commanding every mile ahead.
Inside, Denali Ultimate luxury surrounds you with premium leather seating, Bose premium audio, massive digital displays, head-up display, heated and ventilated seats, sunroof, and advanced trailering technology. With Gooseneck/5th Wheel Prep, ProGrade Trailering System, X31 Off-Road Package, and over 11,000 miles below market average, this truck checks every box serious buyers want.
Bold presence. Serious capability. Flagship comfort.
