Used 2021 GMCSierra 1500 AT4
- Diesel
- 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
Included Packages & Accessories
- Federal Emissions Requirements
- 3.23 Rear Axle Ratio
- Heated 2nd Row Outboard Seats
- Automatic Stop/Start
- Transmission: 10-Speed Automatic
- Wheels: 20" x 9" Machined Aluminum
- Not Equipped w/HD Radio
- Wheel Locks
- Preferred Equipment Group 4SB
- Radio: Premium GMC Infotainment Sys w/Multi-Touch
- 6-Speaker Audio System Feature
- SiriusXM w/360L
- Floor-Mounted Center Console
- Compass
- 4.2" Diagonal Color Display Driver Info Center
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- Keyless Open & Start
- Color-Keyed Carpeting Floor Covering
- Front Prem Floor Liners w/Removable Carpet Insert
- Rear Prem Floor Liners w/Removable Carpet Insert
- OnStar & GMC Connected Services Capable
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access Capable
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 USB Ports
- Rear Dual USB Charging-Only Ports
- HD Rear Vision Camera
- Heated Driver & Front Outboard Passenger Seating
- Ventilated Driver & Front Passenger Seats
- Steering Wheel Audio Controls
- Manual Tilt-Wheel & Telescoping Steering Column
- Electrical Lock Control Steering Column
- Theft Deterrent System
- Power Front Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Spray-On Pickup Bed Liner w/AT4 Logo
- Deep-Tinted Glass
- Body-Color Surround Grille
- LED Cargo Area Lighting
- Red Recovery Hooks
- Tires: 265/65R18SL AT BW
- Wheels: 18" x 8.5" Machined Aluminum
- Rear Wheelhouse Liners
- Trailering Package
- Hitch Guidance
- ProGrade Trailering System
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering App
- 170 Amp Alternator
- Heavy-Duty Air Filter
- Auxiliary External Transmission Oil Cooler
- Auto-Locking Rear Differential
- Hill Descent Control
- Skid Plates
- Off-Road Suspension
- Integrated Trailer Brake Controller
- 2-Speed Transfer Case
- 10-Way Power Driver Seat Adjuster w/Lumbar
- Driver Memory
- Front Bucket Seats
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- GVWR: 7,100 lbs
- Engine Block Heater
- 220 Amp Alternator
- Engine: Duramax 3.0L Turbo-Diesel I6
- 850 Heavy-Duty Battery
- Delete External Engine Oil Cooler
- Tires: LT265/60R20 MT BW
- 265/70R17SL AS BW Spare Tire
Included Packages & Options
- Engine: Duramax 3.0L Turbo-Diesel I6$995
- 220 Amp Alternator
- Engine Block Heater
- 850 Heavy-Duty Battery
- Delete External Engine Oil Cooler
- GVWR: 7,100 lbs
- Tires: LT265/60R20 MT BW$295
- 265/70R17SL AS BW Spare Tire
- Wheels: 20" x 9" Machined Aluminum$800
- Wheel Locks$75
Detailed Specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 24 gal
- Horsepower: 277
Standard Features
- 220 Amp Alternator
- Engine Block Heater
- 850 Heavy-Duty Battery
- Delete External Engine Oil Cooler
- GVWR: 7,100 lbs
- 265/70R17SL AS BW Spare Tire
- Radio: Premium GMC Infotainment Sys w/Multi-Touch
- Floor-Mounted Center Console
- Compass
- 4.2" Diagonal Color Display Driver Info Center
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- Keyless Open & Start
- Color-Keyed Carpeting Floor Covering
- Front Prem Floor Liners w/Removable Carpet Insert
- OnStar & GMC Connected Services Capable
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access Capable
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Instrument Panel Power Outlet
- 2 USB Ports
- Rear Dual USB Charging-Only Ports
- HD Rear Vision Camera
- Heated Driver & Front Outboard Passenger Seating
- Ventilated Driver & Front Passenger Seats
- Steering Wheel Audio Controls
- Manual Tilt-Wheel & Telescoping Steering Column
- Electrical Lock Control Steering Column
- Theft Deterrent System
- Power Front Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Spray-On Pickup Bed Liner w/AT4 Logo
- Deep-Tinted Glass
- Body-Color Surround Grille
- LED Cargo Area Lighting
- Red Recovery Hooks
- Tires: 265/65R18SL AT BW
- Wheels: 18" x 8.5" Machined Aluminum
- Rear Wheelhouse Liners
- Trailering Package
- ProGrade Trailering System
- 170 Amp Alternator
- Heavy-Duty Air Filter
- Auxiliary External Transmission Oil Cooler
- Auto-Locking Rear Differential
- Hill Descent Control
- Skid Plates
- Off-Road Suspension
- Integrated Trailer Brake Controller
- 2-Speed Transfer Case
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Driver Memory
- Rear Prem Floor Liners w/Removable Carpet Insert
- 120-Volt Bed Mounted Power Outlet
- 6-Speaker Audio System Feature
- SiriusXM w/360L
- Hitch Guidance
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering App
Dealer Notes
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
KBB.com Consumer Reviews

- 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.…
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