Used 2025 GMC Sierra 3500HD Denali
- Truck
- Pickup
- Crew Cab
- Luxury
- Condition
- Used
- Aggregate Ratings
- 4.24.2 out of 5 stars
- Generation
- 4(2020 - 2026)
- Drivetrain
- 4X4
- Transmission
- 10-Speed Shiftable Automatic
- Exterior Color
- Sterling
- Interior Color
- Jet Black (Black)Factory Paint Code:H2X
- Size Segment
- Heavy Duty
- Doors
- 4
- Max Seating
- 5
- Final Assembly Point
- Flint, Michigan
- VIN
- 1GT4UWEY0SF338795
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
This one’s basically brand new.
New arrival — one owner 2025 GMC Sierra 3500 Denali with under 1,000 miles. Yes, under 1,000. Still has that new-truck feel, and it comes with Warranty Protection for Life and Oil Changes for Life included.
This isn’t just a heavy-duty truck — it’s a luxury HD built to tow serious weight while keeping you completely comfortable behind the wheel.
Under the hood sits the legendary Duramax 6.6L V8 Turbo Diesel, paired with a 2-speed active electronic Autotrac transfer case and a full trailering setup ready for gooseneck or fifth wheel.
Performance & Capability:
• Duramax 6.6L V8 Turbo Diesel
• 2-Speed Active Electronic Autotrac Transfer Case
• Auto-Locking Rear Differential
• Trailer Brake Controller
• Trailering Package w/ Hitch Guidance & Hitch View
• Gooseneck / 5th Wheel Prep Package
• In-Vehicle Trailering App
• Digital Variable Steering
• Stabilitrak w/ Trailer Sway Control & Hill Start Assist
Denali Reserve Package Highlights:
• Power Sunroof
• Rear Camera Mirror
• 15'' Multi-Color Head-Up Display
Technology & Connectivity:
• 13.4'' GMC Premium Infotainment System
• Google Built-In Compatibility w/ Navigation
• Wireless Apple CarPlay & Wireless Android Auto
• 12.3'' Reconfigurable Driver Information Center
• OnStar Basics (Up to 8 Years)
• SiriusXM w/ 360L Capability
• Wireless Charging
• 120V AC Power Outlets (Cab & Bed)
Interior Comfort:
• Heated & Ventilated Front Seats
• Heated Second Row Outboard Seats
• Heated & Wrapped Steering Wheel
• 12-Way Power Driver Seat
• Driver Seat & Mirror Memory
• Dual-Zone Automatic Climate Control
• Power Sliding Rear Window
• Universal Home Remote
• Bose Premium Sound System
• Bed View Camera
Exterior Presence:
• 20'' Ultra Bright Machined Aluminum Wheels
• Chrome Assist Steps
• Spray-On Bed Liner
• GMC MultiPro Tailgate
• Animated LED Projector Headlamps
• LED Fog Lamps
• LED Cargo Bed Lighting
• Power Folding / Extending Heated Mirrors
• Rain-Sensing Wipers
Sierra HD Pro Safety:
• Trailer Side Blind Zone Alert
• Rear Cross Traffic Alert
• Driver Safety Alert Seat
• HD Surround Vision
• Front & Rear Park Assist
• Automatic Emergency Braking
• Forward Collision Alert
• Front Pedestrian Braking
• Lane Departure Warning
• Following Distance Indicator
• IntelliBeam Auto High Beams
This is the truck for someone who wants maximum capability without giving up comfort. It tows like a workhorse and drives like a Denali should — quiet, refined, and loaded.
And with Warranty Protection for Life and Oil Changes for Life included, it’s protected long after that “new truck†excitement settles in.
Sunset Chevrolet, 603 Harrison St in Tiny Overhead Sumner, part of the Sunset Auto Family.
The exclusive home of Warranty Protection for Life — a limited Powertrain Warranty that’s honored at any ASE-certified repair facility in the U.S. and Canada. Available on all qualifying new and pre-owned vehicles for as long as you own it.