Vehicle Description:

Heavy-duty capability, premium Denali Ultimate craftsmanship, and legendary Duramax diesel performance come together in this 2025 GMC Sierra 2500HD Denali Ultimate 4WD. Finished in Onyx Black over a rich Alpine Umber leather interior, this flagship heavy-duty pickup delivers commanding presence, exceptional towing equipment, advanced technology, and first-class comfort for both demanding work and long-distance travel.

Power comes from the 6.6-liter Duramax turbo-diesel V8 paired with the Allison 10-speed automatic transmission. A two-speed AutoTrac transfer case, automatic locking rear differential, Stabilitrak with Trailer Sway Control, Hill Start Assist, variable steering assist, and heavy-duty suspension components help provide confident control under load and across changing road conditions. The 3.42 rear axle ratio and substantial 11,900-pound GVWR further reinforce this Sierra’s serious heavy-duty credentials.

The Max Trailering Package adds a 3,500-pound-rated rear spring setup, upgraded shock package, 12-inch rear axle, and additional hardware designed to support demanding towing applications. The factory Gooseneck/5th Wheel Package, integrated trailer brake controller, Hitch Guidance with Hitch View, Trailer Side Blind Zone Alert, and available trailering camera technology make this Sierra exceptionally well suited for large trailers, recreational equipment, and serious hauling duties.

The Denali Ultimate exterior is distinguished by power assist steps, power-folding and heated trailering mirrors with auto-dimming capability, LED fog lamps, chrome front recovery hooks, a spray-on bedliner, LED cargo-area lighting, rear wheelhouse liners, roof marker lamps, animated LED projector headlights, a power rear sliding window, and the versatile GMC MultiPro tailgate. The Onyx Black finish gives this truck a bold, upscale appearance that matches its flagship positioning.

Inside, the Alpine Umber cabin delivers luxury that rivals many premium SUVs. Sixteen-way power front bucket seats, heated and ventilated front seats, heated front and rear outboard seating, driver-seat and mirror memory, a leather-wrapped steering wheel, and a 60/40 split-folding rear bench with integrated storage create a comfortable and highly functional environment.

Technology is equally impressive, with a 13.4-inch GMC Premium Infotainment touchscreen, a 12.3-inch digital Driver Information Center, wireless Apple CarPlay and Android Auto, Google built-in capability, wireless device charging, a multicolor head-up display, Bed View Camera, remote start, and a Bose Premium Series 12-speaker audio system. These systems help keep navigation, trailer information, entertainment, and vehicle data easily accessible.

Driver-assistance features include Automatic Emergency Braking, Forward Collision Alert, Front Pedestrian Braking, Lane Departure Warning, Rear Cross Traffic Alert, HD Surround Vision, front and rear parking assistance, Trailer Side Blind Zone Alert, Following Distance Indicator, IntelliBeam automatic high beams, and GMC’s Safety Alert Seat.

With its Onyx Black exterior, Alpine Umber luxury interior, Duramax diesel power, Allison 10-speed transmission, Max Trailering Package, factory gooseneck and fifth-wheel preparation, advanced camera technology, and Denali Ultimate appointments, this GMC Sierra 2500HD is an exceptional choice for drivers who need genuine heavy-duty capability without sacrificing refinement, technology, or comfort.

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