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3929 Forest Ln, Garland, TX 75042
4
4 out of 5 stars
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Used 2021 GMC Sierra 1500 AT4

57,609 miles
For Sale:$30,995
Estimated payment:$703/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $36,000 and $42,200, while the current price is $30,995.$36,000 - $42,200$30,995

  • Priced at $30,995, this vehicle is $5,005 (14%) below the low end of its fair market value of $36,000.

  • The current fair market price range is between $36,000 to $42,200.

  • It has 57,609 miles, which is 16,291 (22%) below the median mileage of 73,900.

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
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2021-gmc-sierra-1500-at4-4x4-4dr-crew-cab-5-8-ft-sb.jpg
  • Truck
  • Pickup
  • Crew Cab
  • Extended Front Legroom
  • Vaulted Headroom
  • Condition
    Used
  • Mileage
    57,609miles
  • Aggregate Ratings
    3.8
    3.8 out of 5 stars
  • Generation
    4(2019 - 2026)
  • Trim
    AT4
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • MPG
    14 city19 highwayMax range: 456 miles
  • Exterior Color
    Satin Steel Metallic (Gray)Factory Paint Code:G9K
  • Interior Color
    Jet Black W Kalahari Accents (Black)Factory Paint Code:HVD
  • Upholstery
    Leather
  • Size Segment
    1/2 Ton
  • Doors
    4
  • Max Seating
    5
  • Max Towing Capacity
    9,200lbs.
  • Weight Class
    6,000-10,000 lbs. (2)
  • Bed Length
    69.9in.
  • Ground Clearance
    10.9inch
  • NHTSA Safety Ratings
    4
    4 out of 5 stars
  • Final Assembly Point
    Fort Wayne, Indiana
  • VIN
    1GTP9EEL1MZ436989
  • Starting MSRP
    $54,700

Engine6.2L V8 Gasoline 420hp

  • Fuel Type:Gasoline
  • Fuel Quality:87
  • Max Horsepower:420 hp @ 5600 rpm
  • Power to Weight Ratio:12.24lbs/hp
  • Max Torque:460 ft.lbf @ 4100 rpm
  • Brand:EcoTec3
  • Displacement:6.2liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Naturally Aspirated
  • Fuel Induction:Direct Injection
  • Redline:6,000rpm
  • Oil Capacity:7.6liters
  • Cam Type:OHV
  • Stroke:3.62
  • Bore:4.06
  • Valves:16

Message from the seller

Introducing the all-new 2021 GMC Sierra 1500 AT4, the ultimate pickup truck for those who demand power, performance, and luxury. This rugged yet refined vehicle is built to conquer any terrain, making it the perfect companion for your off-road adventures. With its bold and aggressive design, the Sierra 1500 AT4 is sure to turn heads wherever you go.

Under the hood, you'll find a powerful 6.2L V8 engine that delivers an impressive 420 horsepower and 460 lb-ft of torque. This beast of an engine is paired with a 10-speed automatic transmission, providing smooth and seamless shifts for an unparalleled driving experience. And with a maximum towing capacity of 9,900 pounds, the Sierra 1500 AT4 is ready to take on any hauling job with ease.

Step inside the spacious and luxurious cabin, and you'll be greeted by premium materials and advanced technology. The AT4 trim comes equipped with features such as leather-appointed seats, wireless charging, and a 7-speaker Bose premium sound system. Whether you're on a long road trip or just running errands, the Sierra 1500 AT4 will keep you comfortable and connected.

But the real standout feature of the 2021 GMC Sierra 1500 AT4 is its off-road capabilities. With features like a 2-inch factory-installed lift, Rancho monotube shocks, and an electronic locking rear differential, this truck is ready to tackle any terrain. Plus, with the available CarbonPro Edition package, you'll get a carbon fiber bed that is both lightweight and durable, making it perfect for hauling your gear on your next adventure.

Don't miss your chance to own the ultimate pickup truck – the 2021 GMC Sierra 1500 AT4. Visit your local dealership today and experience the power, performance, and luxury for yourself. With its extra spacing, this truck is ready to take on anything and everything.

  • 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
    • Tinted Windows

  • Other:

    • Trailer Hitch

  • Safety:

    • Backup Camera
    • Tire Pressure Monitoring

  • Technology:

    • Android Auto

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Listed on March 26, 2026 (a month 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.