2026 GMC Sierra AT4

Vehicle Details
2026 GMC Sierra 2500 4WD Crew Cab AT4
Exterior: Coastal Dune – Interior: Jet Black with Kalahari Accents
Engine: Duramax 6.6L Turbo-Diesel – Transmission: 10-Speed Automatic

Powerful Off-Road Capability Meets Premium Denali-Level Comfort
The 2026 GMC Sierra 2500 AT4 combines Duramax diesel performance with rugged off-road capability. Its 6.6L Duramax Turbo-Diesel engine and 10-speed automatic transmission deliver immense torque for towing and hauling, while features like Skid Plates, Traction Select with Off-Road and Tow-Haul modes, and Stabilitrak with Trailer Sway Control provide confidence in challenging terrain.

Comfort and Utility for Every Mission
Inside, the AT4 delivers comfort and functionality with ventilated and heated front seats, heated rear seats, a 60/40 folding rear bench with storage package, and driver memory for seat and mirrors. Premium floor liners, wrapped heated steering wheel, dual-zone climate control, and a power sliding rear window make long drives or workdays more enjoyable.

Connected Technology for Convenience and Safety
Stay connected and informed with the 13.4" GMC Premium Infotainment screen with Google Built-In, 12.3" color driver info center, Bose premium audio, wireless Apple CarPlay and Android Auto, rear seat reminder, keyless open/start, remote start, and OnStar services. Advanced towing technology, including the Trailering App and Trailer Brake Controller, makes handling heavy loads effortless.

Confidence-Focused Safety
The AT4 comes equipped with Forward Collision Alert, Automatic Emergency Braking, HD Surround Vision, Lane Departure Warning, Front & Rear Park Assist, Trailer Side Blind Zone Alert, Teen Driver mode, and Safety Alert Seat, giving you peace of mind on highways and backroads alike.

Key Features:

Performance & Mechanical:

Duramax 6.6L Turbo-Diesel engine

10-Speed Automatic transmission

Auto-locking rear differential

2-Speed Autotrac transfer case

Skid Plates, Stabilitrak with Trailer Sway Control & Hill Start Assist

Traction Select with Off-Road & Tow-Haul Modes

120V power outlets in cargo bed & instrument panel

All-terrain tires, heavy-duty air cleaner

Connectivity & Technology:

13.4" diagonal GMC Premium Infotainment with Google Built-In

12.3" color digital driver info center

Bose 10-speaker premium sound system

Wireless Apple CarPlay & Android Auto

Rear seat reminder, key card, remote start

8 Years OnStar Basics, SiriusXM trial

Multi-color Head-Up Display, Trailering App, Trailer Brake Controller

Interior:

Dual-zone climate control

10-way power front bucket seats, heated and ventilated

Heated rear outboard seats, 60/40 folding rear bench with storage

Driver seat & mirror memory, wrapped & heated steering wheel

Premium floor liners, power sliding rear window

Exterior:

Coastal Dune finish, GMC MultiPro Tailgate

LED cargo lighting, animated LED projector headlamps

CornerStep rear bumper, spray-on bedliner

Power fold/extend heated trailer mirrors with auto-dim

Red front recovery hooks, rear-window defogger, rear wheelhouse liners

Power sunroof, retractable assist steps

Safety & Security:

Forward Collision Alert & Automatic Emergency Braking

Rear Cross Traffic Alert, Front & Rear Park Assist

HD Surround Vision, Trailer Side Blind Zone Alert

Lane Departure Warning, Teen Driver mode

Safety Alert Seat

Warranty Coverage:

3-Year / 36,000-Mile Bumper-to-Bumper Limited Warranty

5-Year / 100,000-Mile Powertrain Limited Warranty

Roadside Assistance & Courtesy Transportation

First Maintenance Visit Included

Why Buy From Country Chevrolet GMC?
At Country Chevrolet GMC in Benton, KY, we hand-select and inspect every Sierra AT4 to ensure rugged reliability and premium comfort. Our team provides a no-pressure, customer-first experience so you can find the perfect truck with confidence, backed by expert guidance every step of the way.

Equipment
This vehicle's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. The vehicle offers Android Auto for seamless smartphone integration. It is pure luxury with a heated steering wheel. This unit features a hands-free Bluetooth phone system. This vehicle has auto-adjust speed for safe following. The GMC Sierra features a high end BOSE stereo system. Never get into a cold vehicle again with the remote start feature on this unit. This model's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. See what's behind you with the back up camera on this unit. This GMC Sierra offers Apple CarPlay for seamless connectivity. This unit features elegant lines colored with a long lasting sand colored finish. Quickly unlock this unit with keyless entry. Set the temperature exactly where you are most comfortable in this 2026 GMC Sierra 2500. The fan speed and temperature will automatically adjust to maintain your preferred zone climate.

Additional Information
The Country Chevy Advantage Shopping for a used vehicle for sale in KY, especially at Country Chevrolet GMC, offers several lucrative benefits such as: Affordable Features – It can be difficult to afford the premium features of a brand-new model vehicle. However, with a used car purchase, accessories such as sunroofs, leather upholstery, and top-of-the-line navigation systems become that much more affordable. Variety of Options – Regardless of your preferred make, model, model year, condition, price, or trim, our huge used vehicle inventory gives you a much better chance of finding the vehicle you’re looking for. Slower Depreciation – Worried about your new vehicle depreciating as soon as you drive it off our lot? No worries, when buying a used vehicle from Country Chevy, one of the top GMC dealers in KY, much of the depreciation has already occurred before you even purchase. Affordable Upfront Payment – Used car models tend to have lower starting prices than their newer counterparts, as well as lower sales tax, monthly payments, and down payments.