2021 GMC Sierra 1500 AT4

  • Used
  • Diesel
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    The overview

    Exterior Color
    Satin Steel
    Interior Color
    Jet Black
    Odometer
    99,500 miles
    Fuel Economy
    14/19 MPG City/Hwy
    Transmission
    10 speed automatic
    Drivetrain
    4x4
    Engine
    I-6 cyl
    VIN
    3GTU9EET7MG424056
    Stock Number
    26G1173A
    • Show Me the CARFAX Badge

    A closer look at what’s included

    Engine: Duramax 3.0L Turbo-Diesel I6

    • 220 Amp Alternator
    • Engine Block Heater
    • 850 Heavy-Duty Battery
      Cold-cranking amps/95 amp-hr, maintenance free with rundown protection and retained accessory power.
    • Delete External Engine Oil Cooler

    Tires: LT265/60R20 MT BW

    • 265/70R17SL AS BW Spare Tire

    Preferred Equipment Group 4SB

    • Radio: Premium GMC Infotainment Sys w/Multi-Touch
      Includes 8" diagonal color touch-screen, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for Infotainment and vehicle settings.
    • Floor-Mounted Center Console
      Includes cup holders, cell phone storage, power cord management and hanging file holder capability.
    • Compass
      Located in instrument cluster.
    • 4.2" Diagonal Color Display Driver Info Center
      Includes driver personalization.

    Front Bucket Seats

    • 10-Way Power Driver Seat Adjuster w/Lumbar
    • 10-Way Power Passenger Seat Adjuster w/Lumbar
    • Driver Memory
      Recalls driver presets for power driver seat and outside mirrors.

    Front Prem Floor Liners w/Removable Carpet Insert

    • Rear Prem Floor Liners w/Removable Carpet Insert

    120-Volt Instrument Panel Power Outlet

    • 120-Volt Bed Mounted Power Outlet
      400 watts shared with (KI4) instrument panel mounted power outlet.

    Radio: Premium GMC Infotainment Sys w/Multi-Touch

    • 6-Speaker Audio System Feature
    • SiriusXM w/360L
      Enjoy a trial subscription of the All Access package for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the All Access package, you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. Important: the SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental (FDR) use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM customer agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.

    Trailering Package

    • Hitch Guidance

    ProGrade Trailering System

    • Hitch Guidance w/Hitch View
      Includes image adjustment, pan/zoom/tilt.
    • In-Vehicle Trailering App
      Includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder and trailer electrical diagnostics.

    More pre-installed items

    • Federal Emissions Requirements
    • 3.23 Rear Axle Ratio
    • Heated 2nd Row Outboard Seats
    • Automatic Stop/Start
    • Max seating capacity: 5
    • Fuel System: Direct Injection
    • Fuel tank capacity: 24 gal
    • Horsepower: 277
    Vehicle Details
    Discover capability and comfort in this pre-owned 2021 GMC Sierra 1500 AT4, now available in Arkadelphia, AR. Built for drivers who want premium features and rugged performance, this 4WD pickup is powered by a 6-cylinder, 3.0L Diesel engine that delivers confident towing and smooth everyday driving. The AT4 trim adds a bold look and serious off-road readiness, making it a great choice for work, weekend adventures, and everything in between. Inside, you'll enjoy Automatic Climate Control, a Heated Steering Wheel, and Hands Free Bluetooth for added convenience on every trip. The Back-Up Camera makes parking and hitching easier, while the Off-Road Package enhances trail-ready confidence when the pavement ends. GMC's refined cabin design gives this GMC Sierra 1500 a comfortable feel with practical truck utility. If you're searching for a pre-owned GMC Sierra 1500 AT4 in Arkadelphia AR, this one deserves a close look. With strong diesel performance, 4WD traction, and popular technology features, it offers the versatility today's truck shoppers want. Its aggressive styling, versatile cargo bed, and premium ride quality make it a smart option for families, contractors, and outdoor enthusiasts alike in South Arkansas. Contact us today to learn more or schedule your test drive and see why this GMC stands out on city streets and trails alike.

    Equipment
    Our dealership has already run the CARFAX report and it is clean. A clean CARFAX is a great asset for resale value in the future. Start this 1/2 ton pickup from inside with remote start. This 2021 GMC Sierra 1500 offers Apple CarPlay for seamless connectivity. The steering wheel audio controls on this model keep the volume and station within easy reach. See what's behind you with the back up camera on this unit. This vehicle is pure luxury with a heated steering wheel. Bluetooth technology is built into this GMC Sierra, keeping your hands on the steering wheel and your focus on the road. This unit comes equipped with Android Auto for seamless smartphone integration on the road. The leather seats in the vehicle are a must for buyers looking for comfort, durability, and style. This unit keeps you comfortable with Auto Climate. An off-road package is equipped on the GMC Sierra.

    Packages
    Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Hill Descent Control; Electric Rear-Window Defogger; Floor-Mounted Center Console; Theft Deterrent System (unauthorized Entry); Body-Color Surround Grille; 170 Amp Alternator; Auxiliary External Transmission Oil Cooler; Heavy-Duty Air Filter; Skid Plates; Compass; 4.2" Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; Trailering Package; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seating; Off-Road Suspension; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; GMC Connected Access Capable; Color-Keyed Carpeting Floor Covering; OnStar and GMC Connected Services Capable; Power Front Passenger Windows with Express Up/down; 2-Speed Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bed Liner with AT4 Logo; Premium GMC Infotainment System Radio with Multi-Touch; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Front Windows with Driver Express Up/down; Ventilated Driver and

    Peace of mind

    vehicle history report

    Vehicle history report

    • Title information
    • Odometer readings
    • Accident data (if applicable)
    • Service history
    • Vehicle usage
    • Recall information (if applicable)
    • Warranty status
    Free CarFax report

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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.…

    * The advertised price does not include sales tax, vehicle registration fees, other fees required by law, finance charges and any documentation charges. A negotiable administration fee, up to $115, may be added to the price of the vehicle.

    * Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness.

    Tax, title, license and dealer fees (unless itemized above) are extra. Not available with special finance or lease offers.  Pricing dependent upon available manufacturer incentives.  See dealer for complete details.  Prices do not include $129 S&H fee, any additional equipment, destination charges or finance charges.  All prices, specifications, rebates, and availability are subject to change, and/or expiration without notice.  Southwest discounted prices are available to all customers on in stock vehicles only.  Every reasonable effort has been made to ensure the accuracy of the information contained on this site: however, absolute accuracy cannot be guaranteed.  This  entire site, and all information and exhibits appearing on it, are presented to the user as is without warranty of any kind, either expressed or implied.  All vehicles subject to prior sale, MSRP is the Manufacturer's Suggested Retail Price of a vehicle.  Images shown, including vehicle color, trim, options, and other specifications are subject to availability, current incentive offerings, current pricing and customers credit worthiness