Auto One Motors

3929 Forest Ln, Garland, TX 75042
4
4 out of 5 stars

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
  • 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

2021 GMC Sierra 1500: A Comprehensive Overview

The 2021 GMC Sierra 1500 stands as a formidable contender in the full-size pickup truck segment, known for its premium appointments, robust capabilities, and advanced technology. This model year brought several key updates that further cemented its position as a refined and powerful workhorse.

Highlights

  • Engine Options: The Sierra 1500 offers a diverse range of powertrains to suit various needs:

    • 2.7L Turbo I4: This engine provides a good balance of power and efficiency, suitable for everyday driving and lighter towing tasks.
    • 5.3L V8: A classic choice, this engine offers strong performance and towing capability for most typical truck uses.
    • 6.2L V8: For those demanding maximum power and towing prowess, this larger V8 delivers exhilarating acceleration and class-leading towing capacity.
    • 3.0L Duramax Turbo-Diesel I6: This option offers exceptional fuel economy and torque, making it ideal for long-haul towing and maximizing range.
  • Safety Features: GMC equips the Sierra 1500 with a suite of advanced driver-assistance systems designed to enhance safety and confidence:

    • Automatic Emergency Braking: This system automatically applies the brakes to help mitigate or avoid a frontal collision.
    • Forward Collision Alert: Warns the driver of an impending frontal collision, allowing for timely reaction.
    • Lane Keep Assist with Lane Departure Warning: Helps keep the vehicle centered within its lane and alerts the driver if it drifts out.
    • Following Distance Indicator: Displays the following time to the vehicle ahead, promoting safer driving distances.
    • Adaptive Cruise Control: Automatically adjusts the vehicle's speed to maintain a set distance from the vehicle in front.
  • Trim Level Summary: The 2021 Sierra 1500 is available in a spectrum of trims, each offering a distinct blend of features and luxury:

    • Pro: The foundational trim, offering essential functionality for work-oriented buyers.
    • SLE: Elevates the Pro with more creature comforts and advanced technology, a solid all-around choice.
    • Elevation: Boasts a more aggressive and stylish exterior design with premium wheels and badging.
    • SLT: Introduces higher-end features like leather-appointed seating and advanced infotainment options for a more refined experience.
    • AT4: Off-road focused, featuring a 2-inch factory lift, Rancho® monotube suspension, skid plates, and all-terrain tires for enhanced capability on challenging terrain.
    • Denali: The pinnacle of luxury, offering premium materials, exclusive styling cues, advanced comfort features, and the most powerful engine options.
  • Other Notable Aspects:

    • Multi-Pro Tailgate: A class-exclusive six-function tailgate that offers unparalleled versatility for loading, unloading, and accessing the bed.
    • CarbonPro™ Carbon Fiber Bed: Available on some trims, this innovative bed material is stronger, lighter, and more durable than traditional steel.
    • Bed View Camera: Provides a high-definition view of the truck bed, aiding in hooking up trailers and monitoring cargo.
    • Heads-Up Display (HUD): Projects key driving information (speed, navigation, alerts) onto the windshield, allowing drivers to keep their eyes on the road.

What to Expect

Owning a 2021 GMC Sierra 1500 generally provides a comfortable and capable experience. Its refined interior, particularly on higher trims, offers a car-like feel with good ergonomics and ample space for passengers. The ride quality is commendable, even when unladen, thanks to its well-tuned suspension. For those who regularly tow or haul, the Sierra 1500 delivers robust performance and stability.

  • Maintenance: Routine maintenance will include oil changes, tire rotations, and fluid checks, typical for any full-size truck. The diesel engine may require specific diesel fuel filters and additive maintenance. GMC's dealer network is extensive, making servicing readily accessible.
  • Insurance: Insurance costs for the Sierra 1500 will vary based on the chosen trim, engine, your driving record, location, and coverage levels. As a premium full-size truck with advanced features, it will likely fall into a mid-to-higher cost bracket for insurance compared to smaller vehicles.

Potential Considerations

While the Sierra 1500 is a highly desirable truck, potential buyers should be aware of a few aspects:

  • Infotainment System: While the infotainment system is generally user-friendly, some reviews have noted that its responsiveness could be slightly quicker at times.
  • Interior Noise (Diesel): While the Duramax diesel is remarkably quiet for a diesel engine, some occupants might still notice a bit more engine noise than in a gasoline-powered counterpart, especially during hard acceleration.
  • Fuel Economy (V8s): While the V8 engines offer great power, their fuel economy will be commensurate with their size, especially in city driving or when towing.
  • Some Exterior Styling Cues: While many appreciate the Sierra's bold styling, some may find certain design elements, like the grille or headlights, to be a bit polarizing.

Overall Summary

The 2021 GMC Sierra 1500 is a well-rounded and highly capable full-size pickup truck that excels in offering a blend of luxury, technology, and rugged performance. With its diverse powertrain options, innovative features like the Multi-Pro Tailgate, and a comprehensive suite of safety systems, it caters to a wide range of needs, from hard work to comfortable family transport. For those seeking a premium and feature-rich truck experience, the 2021 Sierra 1500 is an excellent choice.

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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.