Used 2025 GMC Sierra 3500HD Denali Ultimate
- Truck
- Pickup
- Crew Cab
- Luxury
- Condition
- Used
- Mileage
- 22,119miles
- Aggregate Ratings
- 4.24.2 out of 5 stars
- Generation
- 4(2020 - 2026)
- Drivetrain
- 4X4
- Transmission
- 10-Speed Shiftable Automatic
- Exterior Color
- Summit White (White)Factory Paint Code:GAZ
- Interior Color
- Alpine Umber (Brown & Beige)Factory Paint Code:H40
- Size Segment
- Heavy Duty
- Doors
- 4
- Max Seating
- 5
- Max Towing Capacity
- 20,000lbs.
- Final Assembly Point
- Flint, Michigan
- VIN
- 1GT4UYEYXSF156260
Engine6.6L V8 Bio Diesel 470hp
- Fuel Type:Bio Diesel
- Max Horsepower:470 hp @ 2800 rpm
- Max Torque:975 ft.lbf @ 1600 rpm
- Brand:Duramax
- Displacement:6.6liters
- Block Type:V
- Cylinders:8
- Aspiration:Turbo
- Fuel Induction:Common Rail Direct Injection
- Oil Capacity:9.5liters
- Cam Type:OHV
- Stroke:3.9
- Bore:4.06
- Valves:32
Message from the seller
2025 GMC Sierra 3500HD Denali Ultimate — One-owner, pristine condition with 22,118 miles. This luxury-ready heavy-duty truck pairs premium comfort with serious capability. Exterior & Wheels - Striking White exterior with aluminum/alloy wheels that balance durability and style. - Front license plate kit installed. Powertrain & Capability - Duramax 6.6L Turbo-Diesel V8 (B20-diesel compatible) for robust low-end torque and long-haul efficiency. - Allison 10-speed automatic transmission for smooth shifts under load. - 4WD and X31 Off-Road Package for confidence on rough terrain. - Gooseneck / 5th Wheel Prep Package and high idle switch — ready for heavy towing and commercial-duty use. Interior & Technology - Alpine Umber leather interior delivering refined, comfortable seating throughout. - Power sunroof for an open, airy cabin experience. - 13.4" diagonal premium GMC infotainment system for crisp navigation, media, and vehicle controls. - Universal garage door opener and adaptive cruise control for convenience and safer cruising. Notable Features - Denali Ultimate trim: top-tier comfort and exclusivity. - One-owner vehicle — cared for and maintained with documented low mileage for a 2025 heavy-duty truck. Why this Sierra 3500HD? This Denali Ultimate blends premium appointments with commercial-grade capability. It’s a great pick for owners who need a luxurious driver’s environment without sacrificing towing prep and diesel durability. Clean, well-specified, and ready for demanding work or weekend adventures. Contact us to schedule a viewing or test drive.