2026 GMC Sierra AT4X

Vehicle Details
2026 GMC Sierra 2500 4WD Crew Cab AT4X
Exterior: Onyx Black – Interior: Obsidian Rush
Engine: 6.6L Duramax Turbo-Diesel – Transmission: 10-Speed Automatic

Power and Luxury for Any Terrain
The 2026 GMC Sierra 2500 AT4X combines Duramax diesel power with premium off-road capability. Featuring a 6.6L Turbo-Diesel engine, 10-speed automatic transmission, and 2-speed Autotrac transfer case, this heavy-duty truck delivers exceptional towing, handling, and performance. Off-road systems include a rear e-locking differential, Traction Select with Off-Road & Tow-Haul modes, hill descent control, skid plates, and all-terrain tires. StabiliTrak with Trailer Sway Control ensures stability when hauling, while the Trailering Package, Trailer Brake Controller, and vehicle trailering app simplify towing.

Safety features include GMC Pro Safety with Forward Collision Alert, Lane Departure Warning, Automatic Emergency Braking, Front Pedestrian Braking, Intellibeam, Safety Alert Seat, Teen Driver Mode, Rear Cross Traffic Alert, HD Surround Vision, Front & Rear Park Assist, and Trailer Side Blind Zone Alert.

Inside, the AT4X offers 16-way power front bucket seats, heated front and rear outer seats, ventilated front seats, a 60/40 folding rear bench with storage, and driver seat/mirror memory. Dual-zone climate control, premium floor liners, and a wrapped heated steering wheel provide comfort and utility. Technology includes a 13.4" GMC Premium Infotainment System with Google Built-In, wireless Apple CarPlay/Android Auto, SiriusXM audio, 12.3" digital driver display, remote keyless entry/start, and a rear seat reminder.

Key Features:

Performance: Duramax 6.6L Turbo-Diesel, 10-Speed Auto, 2 SPD Autotrac, Rear E-Locking Differential, Traction Select, Heavy-Duty Air Cleaner

Technology: 13.4" Touchscreen, Wireless Apple CarPlay & Android Auto, SiriusXM, 12.3" Digital Driver Display, Trailering App

Safety: GMC Pro Safety, Trailer Brake Controller, Rear Cross Traffic Alert, HD Surround Vision, Front & Rear Park Assist

Exterior: MultiPro Tailgate, Spray-On Bedliner, CornerStep Rear Bumper, LED Cargo & Fog Lighting, Power Folding Heated Trailer Mirrors, Animated LED Headlamps, Red Front Recovery Hooks

Warranty Coverage:
3-Year/36,000-Mile Bumper-to-Bumper, 5-Year/100,000-Mile Powertrain, Roadside Assistance & Courtesy Transportation, First Maintenance Visit Included.

Why Buy From Country Chevrolet GMC?
At Country Chevrolet GMC, we offer a no-pressure buying experience. Every Sierra 2500 AT4X is hand-selected, thoroughly inspected, and ready for adventure. Our team helps you find the perfect heavy-duty truck with confidence.

Equipment
This GMC Sierra's Lane Departure Warning helps keep you in your lane. See what's behind you with the back up camera on this unit. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this unit. Anywhere on the planet, you will have hundreds of digital stations to choose from. This 3/4 ton pickup offers Apple CarPlay for seamless connectivity. This unit features a hands-free Bluetooth phone system. This unit's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. This GMC Sierra is pure luxury with a heated steering wheel. This model features steering wheel audio controls. The leather seats in the vehicle are a must for buyers looking for comfort, durability, and style. This unit offers Android Auto for seamless smartphone integration. An off-road package is equipped on this unit. This 2026 GMC Sierra 2500 has auto-adjust speed for safe following. Never get into a cold vehicle again with the remote start feature on this unit.

Packages
Preferred Equipment Group 4SG: Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Power Sliding Rear Window with Defogger; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Inside Rearview Auo-Dimming Rear Camera Mirror; Front Rain-Sensing Wipers; 120-Volt Instrument Panel Power Outlet; LED Smoked Amber Roof Marker Lamps; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; Front Premium Floor Liners with Removable Carpet Insert; Rear Premium Floor Liners with Removable Carpet Insert; OnStar Services Capable; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Power Sunroof; Multicolor 15" Diagonal Head-Up Display; Keyless Open and Start; Bose Premium Series 12-Speaker System; Push Button Start; LED Cargo Area Lighting; Remote Vehicle Starter System; Hill Descent Control; Floor-Mounted Center Console; Bed View Camera with Two Trailer Camera Provisions; Trailer Tire Pressure Monitor Sensors; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 2 Charge/data USB Ports Inside Center Console; Steering Wheel Audio Controls; 2 Charge-Only Rear USB Ports; Universal Home Remote; 120-Volt Bed Mounted Power Outlet; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; ProGrade Trailering System; Rear Wheelhouse Liners. Gooseneck/5th Wheel Prep Package. Onyx Black. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**

Additional Information
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