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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 SLT

45,772 miles
For Sale:$29,995
Estimated payment:$680/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $33,300 and $39,100, while the current price is $29,995.$33,300 - $39,100$29,995

  • Priced at $29,995, this vehicle is $3,305 (10%) below the low end of its fair market value of $33,300.

  • The current fair market price range is between $33,300 to $39,100.

  • It has 45,772 miles, which is 43,128 (49%) below the median mileage of 88,900.

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-slt-4x4-4dr-crew-cab-5-8-ft-sb.jpg
2021-gmc-sierra-1500-slt-4x4-4dr-crew-cab-5-8-ft-sb.jpg
  • Truck
  • Pickup
  • Crew Cab
  • Extended Front Legroom
  • Vaulted Headroom
  • Condition
    Used
  • Mileage
    45,772miles
  • Aggregate Ratings
    3.6
    3.6 out of 5 stars
  • Generation
    4(2019 - 2026)
  • Trim
    SLT
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • MPG
    22 city26 highwayMax range: 624 miles
  • Exterior Color
    Satin Steel Metallic (Gray)Factory Paint Code:G9K
  • Interior Color
    Jet Black (Black)Factory Paint Code:H1Y
  • Upholstery
    Leather
  • Size Segment
    1/2 Ton
  • Doors
    4
  • Max Seating
    6
  • Max Towing Capacity
    11,700lbs.
  • Weight Class
    6,000-10,000 lbs. (2)
  • Bed Length
    69.9in.
  • Ground Clearance
    8.1inch
  • NHTSA Safety Ratings
    4
    4 out of 5 stars
  • Final Assembly Point
    Silao, Mexico
  • VIN
    3GTU9DET2MG380056
  • Starting MSRP
    $50,800

Engine3L I6 Diesel 277hp

  • Fuel Type:Diesel
  • Max Horsepower:277 hp @ 3750 rpm
  • Power to Weight Ratio:18.19lbs/hp
  • Max Torque:460 ft.lbf @ 1500 rpm
  • Brand:Duramax
  • Displacement:3liters
  • Block Type:I
  • Cylinders:6
  • Aspiration:Turbo
  • Fuel Induction:Common Rail Direct Injection
  • Cam Type:DOHC
  • Stroke:3.54
  • Bore:3.3
  • Valves:24

Message from the seller

Introducing the 2021 GMC Sierra 1500 SLT - the ultimate combination of power, style, and capability. This rugged yet refined truck is built for those who demand the best in every aspect. From hauling heavy loads to navigating through tough terrain, the Sierra 1500 SLT will not disappoint.

Step inside and experience the spacious and luxurious interior, featuring premium leather seats and state-of-the-art technology. The available MultiPro Tailgate allows for even more versatility, making loading and unloading a breeze.

Under the hood, the Sierra 1500 SLT boasts a powerful 5.3L V8 engine, delivering impressive towing and hauling capabilities. With advanced trailering technology, you can confidently tackle any job or adventure.

Equipped with the latest safety features, including Forward Collision Alert and Lane Keep Assist, the Sierra 1500 SLT offers peace of mind on every journey.

Don't miss your chance to own the 2021 GMC Sierra 1500 SLT. Visit our dealership today and experience the difference for yourself. With its bold design, advanced technology, and unmatched performance, this truck is truly in a class of its own. Upgrade to the Sierra 1500 SLT and conquer the road with style and confidence.

  • Comfort & Seating:

    • Heated Seats
    • Heated Steering Wheel
    • Power 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 20, 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.