2021 GMC Sierra 1500 AT4

  • Used
  • Diesel
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    The overview

    Exterior Color
    Ebony Twilight Metallic
    Interior Color
    JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHE
    Odometer
    107,944 miles
    Fuel Economy
    14/19 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    Engine: Duramax 3.0L, Turbo-Diesel, Inline 6 Cylinder
    VIN
    3GTU9EET4MG380372
    Stock Number
    U24324A

      A closer look at what’s included

      Base model features & specs only
      • Max seating capacity: 5
      • Fuel System: Direct Injection
      • Fuel tank capacity: 24 gal
      • Horsepower: 277
      This 2021 GMC Sierra 1500 AT4 in Black represents a capable truck built for both work and life's adventures. With its turbocharged diesel engine delivering proven performance and efficiency, combined with 4WD capability, this Sierra stands ready to handle whatever terrain you encounter.- Power Sunroof- AT4 Preferred Package with Navigation- Premium Bose Audio System with SiriusXM- Diesel Turbocharged Engine with 460 lb-ft of Torque- Wireless Charging- Heated and Ventilated Front Seats- 8 Premium GMC Infotainment with Apple CarPlay/Android Auto- Universal Home Remote- Power Sliding Rear Window- Spray-On Pickup Bed Liner with AT4 Logo- Off-Road Suspension with Hill Descent Control- ProGrade Trailering System with Integrated Trailer Brake Controller- Remote Vehicle Starter System- 220-Amp Alternator with Engine Block Heater- Rear Step Bumper with Red Recovery HooksThe diesel turbocharged engine delivers 277 horsepower and impressive low-end torque, making it equally adept at highway cruising and demanding work. At 22 city MPG and 26 highway MPG, this truck balances capability with efficiency. The 10-speed automatic transmission engages smoothly across varied driving conditions, while the 4WD system with auto-locking rear differential and off-road suspension ensures confident traction on multiple surfaces.Inside, the cabin prioritizes comfort and connectivity. Heated and ventilated front seats adapt to seasonal changes, while the power sunroof floods the cabin with natural light. The 8-inch Premium GMC Infotainment system with navigation integration keeps you oriented, and Apple CarPlay and Android Auto compatibility ensures your smartphone integrates seamlessly. The Bose Premium Audio System transforms your commute with SiriusXM satellite radio, while wireless charging eliminates the hassle of tangled cables.The AT4 Preferred Package elevates this truck with thoughtful additions like the rear power sliding window, making bed access and ventilation effortless. The ProGrade Trailering System combines capability with technology, including the integrated trailer brake controller and hitch guidance with hitch view camera. Red recovery hooks stand ready for pulling duty, while the spray-on bed liner protects your investment against wear and weather.Safety features throughout include dual front airbags, side-impact protection, electronic stability control, and a rearview camera for confident maneuvering. The truck's substantial dimensions and commanding driving position provide excellent visibility for navigating tight spots or monitoring your cargo.We have been serving the community since 1934!We have a well trained award winning sales and service team ready to make your experience a great one!Well stocked inventory of both New and quality Preowned Cars, Trucks and SUV'sCertified Technicians in an up to date service facilityWe know your time is valuable. We are sure you will find our site a fast and convenient way to research and find a vehicle that's right for you. If we can be of any assistance while visiting us online, send us an email and we will promptly reply.

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      Peace of mind

      Optional add-on protection

      • GAP Protection
      • Lifetime Powertrain
      • Tires and Wheels
      • Paint Protection

      A name you can trust

      Dixie Buick GMC Truck is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
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      KBB.com Consumer Reviews

      Kelley Blue Book Logo4.0out of 5 overall
      • 4.0

        Depreciation of 50%

        by Manny A on 10/28/2026 10:06:36 AM

        This is a amazing truck.. Comfortable lots of sensors Etc…. My truck has 30000 miles I when to trade in they offer $46000 I paid $86000 the depreciation is incredible I don’t buy new truck never again.…
      • 5.0

        2021 GMC SLT 4WD SIERRA, Great Truck

        by Ransom1 on 10/15/2026 4:18:42 PM

        This is my 8th truck. This is hands down the very best truck I’ve ever owned. Not only is it the best looking truck on the road I have never had it in the shop except for oil changes and scheduled maintenance. The silver does not show dirt or grime.…
      • 5.0

        Great 4 cylinder truck

        by Steve on 9/23/2026 2:01:15 AM

        I have only pulled a trailer one time and still got 18 mpg down doing 80 down the interstate. Otherwise this vehicle is used for commuting or recreating. I typically get 22-24 mpg driving MT highways to the mountains. The turbo has some spunk for getting up to speed and the five years I've had my truck no complaints.…
      *Dixie Discount applies to everyone. This price is for the vehicle as equipped from the manufacturer only. Any dealer added options or equipment extra. Price plus Tax, tag, and any applicable fees. Dealer Retains all rebates. Not available with special finance or lease offers. Any finance incentives are for qualified buyers financing with GM Financial only. While great effort is made to ensure the accuracy of the information on this site, errors do occur so please verify information with a customer service rep. This is easily done by calling us at (239) 330-9918 or by visiting us at the dealership. The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.