2026 GMC Sierra 1500 AT4

The 2026 GMC Sierra 1500 AT4 comes standard with the available Duramax 3.0-liter Turbo-Diesel engine paired with a 10-speed automatic transmission, delivering the kind of towing and hauling muscle you'd expect from a full-size pickup truck. The Sierra 1500 lineup is also available with a TurboMax engine producing 310 horsepower and best-in-class standard torque of 430 pound-feet, as well as an available 6.2-liter V8 engine with a 10-speed automatic transmission for drivers who demand maximum power. When the trail gets rough, the AT4's factory-installed 2-inch suspension lift, Rancho monotube shocks, two-speed Autotrac transfer case, and underbody skid plates keep you moving with confidence. Properly equipped, the Sierra 1500 can tow up to 13,300 pounds.

Step inside the 2026 Sierra 1500 AT4, and you'll find a cabin that blends rugged character with thoughtful comfort. The AT4 features a unique Jet Black interior with Kalahari accents, along with heated and ventilated perforated front leather seating surfaces that make long drives genuinely enjoyable. The Sierra 1500 offers best-in-class standard Crew Cab front head- and legroom, so every passenger can stretch out comfortably. Smart and ample storage solutions throughout the cabin mean there's always room for work supplies or weekend gear without sacrificing interior comfort.

The 2026 GMC Sierra 1500 AT4 brings an impressive suite of connected technology to the cab. A 13.4-inch diagonal multicolor touchscreen powers the GMC Infotainment System with Google built-in compatibility and voice-activated controls. Drivers benefit from over 40 inches diagonal of combined driver-focused digital displays, including a 12.3-inch diagonal Driver Information Center. Available Super Cruise hands-free driver assistance technology lets you go hands-free on a growing network of compatible roads, while the available ProGrade Trailering System integrates smart tools to help you hitch, monitor, and maneuver a trailer with commanding control. Up to 14 available camera views further simplify navigating tight spaces and tricky terrain.

The 2026 Sierra 1500 AT4 is equipped with GMC Pro Safety features — a comprehensive suite of collision-avoidance and driver assistance technologies designed to heighten your awareness on and off the road. Available features include Front and Rear Park Assist, HD Surround Vision, and Hill Descent Control, which uses antilock braking technology to help deliver a smooth, controlled descent on steep grades. These systems work together to give you greater confidence whether you're merging on the highway or crawling over a rocky trail.

The 2026 GMC Sierra 1500 lineup offers eight distinct trims to suit a wide range of drivers and lifestyles. The Pro is the hardworking entry point, while the SLE, Elevation, and SLT add progressive levels of comfort and convenience. The AT4 steps up with factory off-road equipment and distinctive trail-ready styling, while the AT4X takes capability even further with Multimatic DSSV dampers and exclusive front and rear electronic locking differentials — a combination not offered on any competitor in its class. At the top of the lineup, the Denali and Denali Ultimate deliver luxurious appointments, including available Super Cruise technology, premium Bose audio, and 6.2-liter V8 power.

The 2026 GMC Sierra 1500 AT4 is a full-size pickup truck that's as capable as it is refined. From its trail-proven off-road suspension to its thoughtfully designed interior, the AT4 brings genuine professional-grade character to every drive. Stop by and explore the Sierra 1500 AT4 for yourself — this truck is built to exceed your expectations.