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2025 GMC Sierra 3500HD Denali Ultimate | Duramax Diesel | LoadedVehicle OverviewTop-of-the-line Denali Ultimate with the legendary 6.6L Duramax Turbo Diesel and Allison 10-speed. Built for serious capability with premium luxury throughout.Performance & Capability6.6L Duramax V8 Turbo DieselAllison 10-Speed Automatic Transmission4WD with Autotrac Transfer Case3.42 Rear Axle RatioOff-Road Suspension (Z71)Exhaust Brake & Dual AlternatorsTrailering Package w/ Brake Controller & Hitch GuidanceGooseneck / 5th Wheel Prep PackageExterior Highlights20" Machined Aluminum WheelsPower Retractable Assist Steps w/ LED LightingPower SunroofSpray-On BedlinerMultiPro Tailgate w/ Kicker Audio SystemLED Headlamps, Fog Lamps & Bed LightingTonneau Cover (Dealer Installed)Interior & ComfortAlpine Umber Full Leather Interior (Denali Ultimate)Heated & Ventilated Front Seats + Heated Rear SeatsDriver & Passenger Massage SeatsHeated Steering WheelDual-Zone Automatic Climate ControlPower Sliding Rear WindowWireless ChargingTechnology13.4" Touchscreen w/ Google Built-InBose Premium Sound SystemHead-Up Display (HUD)Rear Camera MirrorHD Surround VisionWireless Apple CarPlay & Android AutoSafety & Driver AssistAdaptive Cruise ControlForward Collision Alert & Auto Emergency BrakingLane Departure WarningRear Cross Traffic AlertFront & Rear Park AssistTrailer Side Blind Zone AlertWhy This Truck?Fully loaded Denali Ultimate HD with unmatched diesel power, luxury interior, and serious towing capability. Perfect for work or lifestyle.Contact us today to book your test drive or for more details!
