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
- 1GT4UWEYXSF338741
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
If you’ve been waiting for the right heavy-duty truck without the wait, this is it.
New arrival — one owner 2025 GMC Sierra 3500HD Denali with under 1k miles. Practically brand new and loaded with premium features, this Sierra delivers unmatched capability and refinement. It also includes Warranty Protection for Life and Oil Changes for Life, giving you long-term confidence and peace of mind from the start.
Under the hood is the legendary Duramax 6.6L V8 Turbo Diesel, paired with a 2-speed active electronic Autotrac transfer case and full trailering capability — ready for gooseneck or fifth-wheel towing with ease.
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
• 3.42 Rear Axle Ratio
Denali Reserve Package:
• 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 & Luxury:
• 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 Highlights:
• 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 w/ Perimeter Lighting
• 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 Sierra 3500HD Denali is built to handle serious towing and demanding jobs, while delivering the quiet, refined ride and premium features you expect from GMC’s flagship heavy-duty truck.
With under 1,000 miles, one-owner history, Warranty Protection for Life, and Oil Changes for Life included, this is as close to buying new as you can get — without the new-truck wait.
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.