Legend Auto Sales

14650 1st Avenue South, Seattle, WA 98168
4.5
4.5 out of 5 stars
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Used 2020 GMC Sierra 3500HD AT4

98,979 miles
For Sale:$51,991

$909(-1.7%)price drop

Estimated payment:$1,179/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $47,800 and $56,200, while the current price is $51,991.$47,800 - $56,200$51,991
  • Priced at $51,991, this vehicle is within the current market price range of $47,800 to $56,200.

  • It has 98,979 miles, which is close to the median mileage of 99,900.

Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.

View Full Value Report

  • Truck
  • Pickup
  • Crew Cab
  • Heavy Hauler
  • Extended Front Legroom
  • Condition
    Used
  • Mileage
    98,979miles
  • Aggregate Ratings
    3.8
    3.8 out of 5 stars
  • Generation
    4(2020 - 2026)
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • Exterior Color
    Sky
  • Interior Color
    Jet Black W Kalahari Accents (Black)Factory Paint Code:HVD
  • Size Segment
    Heavy Duty
  • Doors
    4
  • Max Seating
    5
  • Max Towing Capacity
    14,500lbs.
  • Final Assembly Point
    Flint, Michigan
  • VIN
    1GT49VEY4LF280817

Engine6.6L V8 Bio Diesel 445hp

  • Fuel Type:Bio Diesel
  • Max Horsepower:445 hp @ 2800 rpm
  • Max Torque:910 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

2020 GMC Sierra 3500HD AT4 Sky 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic

Bluetooth, 4WD, Backup Camera, Leather Seats, Moonroof, 2-Speed Active Transfer Case, Apple CarPlay/Android Auto, AT4 Preferred Package, Bose Premium 7 Speaker Sound System, Front dual zone A/C, Heated front seats, Heated rear seats, Heated steering wheel, Heavy Duty Front Spring/Camper Package, Hill Descent Control, Memory seat, Navigation System, Power driver seat, Power passenger seat, Power Sliding Rear Window w/Defogger, Radio: AM/FM w/Prem GMC Infotainment System & Navi, Remote keyless entry, Remote Vehicle Starter System, Speed control, Universal Home Remote, Ventilated front seats, Wireless Charging, X31 Off-Road Package, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports (First Row), 2 USB Ports Inside Console, 220 Amp Alternator, 2nd Row Dual USB Charge-Only Ports, 2nd Row Heated Outboard Seats, 4-Wheel Disc Brakes, 4.2'' Diagonal Color Display Driver Info Center, 4G LTE Wi-Fi Hotspot Capable, ABS brakes, Air Conditioning, All-Weather Floor Liners w/AT4 Logo (LPO), Alloy wheels, AM/FM radio: SiriusXM with 360L, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic temperature control, Brake assist, Bumpers: body-color, Compass, Compass Located In Instrument Cluster, Deep-Tinted Glass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Floor-Mounted Center Console, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front fog lights, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC Connected Access Capable, HD Radio, HD Rear Vision Camera, Heated door mirrors, Heated Driver & Front Outboard Passenger Seats, Heavy-Duty 80 Amp Battery, High Idle Switch, Hitch Guidance w/Hitch View, Illuminated entry, In-Vehicle Trailering System App, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Low tire pressure warning, Manual Tilt-Wheel/Telescoping Steering Column, Occupant sensing airbag, Off-Road Suspension, OnStar & GMC Connected Services Capable, Outside temperature display, Overhead airbag, Overhead console, Painted Blk Surround Grille w/High Gloss Blk Mesh, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Leather-Appointed Front Seat Trim, Pickup Bed, Power Door Locks, Power door mirrors, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down, Power steering, Power Sunroof, Power windows, Preferred Equipment Group 4SB, Premium audio system: Premium GMC Infotainment System, ProGrade Trailering System, Radio: AM/FM w/Premium GMC Infotainment System, Rear reading lights, Rear seat center armrest, Rear step bumper, Rear Wheelhouse Liners, Rear window defroster, Red Recovery Hooks, Security system, SiriusXM w/360L, Speed-sensing steering, Split folding rear seat, Spray-On Pickup Bed Liner w/AT4 Logo, Steering Wheel Audio Controls, Steering wheel mounted audio controls, Tachometer, Telescoping steering wheel, Tilt steering wheel, Traction control, Trip computer, Turn signal indicator mirrors, Unauthorized Entry Theft-Deterrent System, Variably intermittent wipers, Ventilated Driver & Front Passenger Seats, Voltmeter, Wheels: 18'' 6-Spoke Machined Aluminum, Winter Grille Cover, 2-Speed Active Transfer Case, Apple CarPlay/Android Auto, AT4 Preferred Package, Bose Premium 7 Speaker Sound System, Front dual zone A/C, Heated front seats, Heated rear seats, Heated steering wheel, Heavy Duty Front Spring/Camper Package, Hill Descent Control,

* Based on opinions and should be considered as general guidance only.

  • Reliability (4)
    4 out of 5 stars
    GMC heavy-duty trucks generally have a strong reputation for reliability, and the 2020 Sierra 3500HD AT4 is expected to follow suit, built for demanding work and towing.
  • Maintenance (3)
    3 out of 5 stars
    Maintenance costs for heavy-duty trucks can be higher than standard vehicles due to larger components and specialized fluids. Fuel economy, while expected for its class, will also contribute to running costs.
  • Technology (4)
    4 out of 5 stars
    GMC offers a good suite of technology, including a user-friendly infotainment system with Apple CarPlay and Android Auto, and available advanced driver-assistance features. The multi-camera system is particularly useful for towing.
  • Comfort (4)
    4 out of 5 stars
    The cabin is spacious and well-appointed, offering a comfortable ride even on longer journeys. The AT4 specific seats provide good support, and road noise is adequately suppressed.
  • Dynamics (4)
    4 out of 5 stars
    For a heavy-duty truck, the Sierra 3500HD AT4 handles surprisingly well, especially considering its size and off-road capabilities. Steering is responsive, and body roll is managed effectively.

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Listed on December 11, 2025 (4 months ago)
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