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S83W 18350 Saturn Dr, Muskego, WI 53150
4.9
4.9 out of 5 stars
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Used 2021 GMC Sierra 2500HD AT4

44,108 miles
For Sale:$62,995
Estimated payment:$1,428/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $52,100 and $61,100, while the current price is $62,995.$52,100 - $61,100$62,995

  • Priced at $62,995, this vehicle is $1,895 above the high end of its fair market value of $61,100.

  • The current fair market price range is between $52,100 to $61,100.

  • It has 44,108 miles, which is 42,992 (49%) below the median mileage of 87,100.

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.

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Used 2021 GMC Sierra 2500HD AT4 for sale near Milwaukee, Racine, Waukesha, Kenosha, Brookfield, New Berlin, Menomonee Falls, Oconomowoc
Used 2021 GMC Sierra 2500HD AT4 for sale near Milwaukee, Racine, Waukesha, Kenosha, Brookfield, New Berlin, Menomonee Falls, Oconomowoc
Used 2021 GMC Sierra 2500HD AT4 for sale near Milwaukee, Racine, Waukesha, Kenosha, Brookfield, New Berlin, Menomonee Falls, Oconomowoc
Used 2021 GMC Sierra 2500HD AT4 for sale near Milwaukee, Racine, Waukesha, Kenosha, Brookfield, New Berlin, Menomonee Falls, Oconomowoc
Used 2021 GMC Sierra 2500HD AT4 for sale near Milwaukee, Racine, Waukesha, Kenosha, Brookfield, New Berlin, Menomonee Falls, Oconomowoc
  • Truck
  • Pickup
  • Crew Cab
  • Heavy Hauler
  • Extended Front Legroom
  • Vaulted Headroom
  • Condition
    Used
  • Mileage
    44,108miles
  • Aggregate Ratings
    3.8
    3.8 out of 5 stars
  • Generation
    4(2020 - 2026)
  • Trim
    AT4
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • Exterior Color
    Cayenne Red Tintcoat (Red & Orange)Factory Paint Code:GSK
  • Interior Color
    Jet Black W Kalahari Accents (Black)Factory Paint Code:HVD
  • Upholstery
    Leather
  • Size Segment
    Heavy Duty
  • Doors
    4
  • Max Seating
    5
  • Max Towing Capacity
    18,500lbs.
  • Weight Class
    10,000-14,000 lbs. (3)
  • Bed Length
    82.2in.
  • Ground Clearance
    10.1inch
  • Final Assembly Point
    Flint, Michigan
  • VIN
    1GT19PEY3MF263345
  • Starting MSRP
    $59,100

Engine6.6L V8 Bio Diesel 445hp

  • Fuel Type:Bio Diesel
  • Max Horsepower:445 hp @ 2800 rpm
  • Power to Weight Ratio:15.4lbs/hp
  • 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

Introducing the powerful and capable 2021 GMC Sierra 2500HD AT4, the ultimate truck for all your heavy-duty needs. With its rugged and bold design, this truck commands attention on the road. Equipped with a 6.6L V8 engine and a 10-speed automatic transmission, the Sierra 2500HD AT4 delivers an impressive 445 horsepower and 910 lb-ft of torque. Whether you're hauling equipment or towing a trailer, this truck can handle it all with ease.

Step inside the spacious and luxurious cabin, and you'll be greeted with premium materials and advanced technology. The AT4 trim level boasts leather-appointed seats with heated and ventilated front seats, ensuring maximum comfort on long drives. The 8-inch infotainment system with Apple CarPlay and Android Auto, along with a 4G LTE Wi-Fi hotspot, keeps you connected on the go.

But what truly sets the 2021 Sierra 2500HD AT4 apart is its off-road capabilities. With a factory-installed 2" lift and 18" mud-terrain tires, this truck can conquer any terrain with confidence. The advanced off-road suspension and skid plates provide added durability, while the exclusive MultiPro™ tailgate makes loading and unloading a breeze.

Safety is also a top priority in the Sierra 2500HD AT4, with features such as a 360-degree camera, lane departure warning, and forward collision alert keeping you and your passengers safe on the road.

Don't miss your chance to own the ultimate heavy-duty truck of 2021. Visit our dealership today and experience the power, luxury, and capability of the 2021 GMC Sierra 2500HD AT4.

  • Comfort & Seating:

    • Heated Seats
    • Heated Steering Wheel
    • Power Seats
    • Ventilated Seats

  • Convenience:

    • 115V Power Outlet
    • Automatic Climate Control
    • Remote Start

  • Entertainment:

    • Bluetooth
    • Satellite Radio

  • Exterior:

    • Heated Mirrors
    • Sunroof/Moonroof
    • Tinted Windows

  • Other:

    • Trailer Hitch

  • Safety:

    • Backup Camera
    • Tire Pressure Monitoring

  • Technology:

    • Android Auto

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Listed on May 6, 2025 (a year ago)
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Cruz™ Disclaimer: Vehicle details shown on this site are provided by sellers or third parties. Cruz™ does not independently verify this information and is not liable for its accuracy. All services and content are offered without any warranty, either expressed or implied. Learn more here.MPG & Max Range: Fuel economy estimates are provided by the EPA and are intended for comparison purposes only. Your actual mileage will vary depending on driving conditions, vehicle condition, and other factors.Price: Prices shown may not include taxes, fees, or other charges. Prices and availability are subject to change without notice. Contact the seller for the most current pricing information.Options & Features: Installed options may not be shown. Contact the seller for more information about available features and options.

This Used 2021 GMC Sierra 2500HD AT4 is available for drivers in Milwaukee, Racine, Waukesha, Kenosha, Brookfield, New Berlin, Menomonee Falls, Oconomowoc ...