2026 GMC Sierra AT4

Vehicle Details
2026 GMC Sierra 2500HD AT4 Crew Cab 4WD
Exterior: Coastal Dune | Interior: Jet Black with Kalahari Accents
Engine: Duramax 6.6L Turbo-Diesel V8 | Transmission: 10-Speed Automatic

The 2026 GMC Sierra 2500HD AT4 blends heavy-duty performance with advanced technology and premium comfort, built for those who expect power, precision, and refinement in every mile. Under the hood, the legendary Duramax 6.6L Turbo-Diesel V8 delivers exceptional torque and towing strength, paired with a smooth-shifting Allison 10-Speed Automatic Transmission for confident hauling and off-road control.

Engineered for capability, the AT4 features an AutoTrac 2-Speed Transfer Case, Auto-Locking Rear Differential, and a Traction Select System with Off-Road and Tow/Haul modes. The StabiliTrak System with Trailer Sway Control and Hill Start Assist keeps you steady, while the Heavy-Duty Air Cleaner, Digital Variable Steering Assist, and Skid Plates enhance durability on rugged terrain. Integrated trailering technology, including a Trailer Brake Controller and Vehicle Trailering App, make this truck ready for serious work or play.

Inside, comfort meets craftsmanship. The Jet Black with Kalahari Accent Interior surrounds you in refined materials and purposeful design. 10-Way Power Front Bucket Seats with heating and ventilation, Heated Rear Outboard Seats, Driver Seat & Mirror Memory, and a Heated Leather-Wrapped Steering Wheel provide comfort and convenience for every drive. Dual-Zone Automatic Climate Control and Premium Floor Liners ensure a clean, comfortable cabin in any season.

Technology takes center stage with the Premium GMC Infotainment System featuring a 13.4” Color Touchscreen with Google Built-In, Wireless Apple CarPlay & Android Auto, and a 12.3” Digital Driver Information Center. The BOSE Premium Audio System, Rear Camera Mirror, and Multicolor Head-Up Display from the Technology Package deliver cutting-edge visibility and immersive sound. Additional highlights include SiriusXM Radio, Bluetooth Connectivity, Remote Keyless Open & Start, and an OnStar 8-Year Basic Plan.

On the exterior, the Sierra AT4 commands attention in Coastal Dune Metallic with signature Red Front Recovery Hooks, Animated LED Projector Headlamps, LED Fog Lamps, and the versatile GMC MultiPro Tailgate. Functional design elements include a Spray-On Bedliner, CornerStep Rear Bumper, Power-Folding and Extending Trailer Mirrors, and LED Cargo Lighting. The Power Sunroof and Retractable Assist Steps add premium convenience, while the Gooseneck/5th Wheel Prep Package makes it ready for heavy-duty towing right from the factory.

Key Features:

Performance: Duramax 6.6L Turbo-Diesel, Allison 10-Speed Automatic, AutoTrac 4WD, 220-Amp Alternator, Skid Plates, Tow/Haul Mode

Technology: 13.4" Touchscreen with Google Built-In, Bose Premium Audio, Rear Camera Mirror, Head-Up Display, Wireless Smartphone Integration

Safety: Forward Collision Alert, Automatic Emergency Braking, Lane Departure Warning, HD Surround Vision, Rear Cross Traffic Alert, Trailer Side Blind Zone Alert

Interior: Heated & Ventilated Front Seats, Heated Rear Seats, Driver Memory, Dual-Zone Climate, Premium Leather

Exterior: Coastal Dune Paint, Power Trailer Mirrors, LED Lighting, MultiPro Tailgate, Spray-On Bedliner, Retractable Steps

Warranty & Benefits:
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 deliver more than just trucks — we deliver confidence. Each Sierra 2500HD AT4 is hand-selected, thoroughly inspected, and backed by a dedicated team committed to your satisfaction. Whether you’re towing, working, or exploring, our goal is to help you drive home in a truck that’s built to perform and built for you.

Equipment
The leather seats in the GMC Sierra are a must for buyers looking for comfort, durability, and style. Protect this GMC Sierra from unwanted accidents with a cutting edge backup camera system. This GMC Sierra offers Android Auto for seamless smartphone integration. Never get into a cold vehicle again with the remote start feature on this GMC Sierra. The GMC Sierra's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. Engulf yourself with the crystal clear sound of a BOSE sound system in the vehicle. The GMC Sierra has auto-adjust speed for safe following. This GMC Sierra features a hands-free Bluetooth phone system. Keep your hands warm all winter with a heated steering wheel in this GMC Sierra . This 3/4 ton pickup offers Apple CarPlay for seamless connectivity. This 3/4 ton pickup's Lane Departure Warning helps keep you in your lane. It has a V8, 6.6L high output engine.

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.