New 2026 GMC Sierra 1500 AT4

Description for 2026 GMC Sierra 1500 AT4 Truck

The 2026 GMC Sierra 1500 AT4 is a full-size pickup designed with off-road strength, trailering capability, and refined technology, all integrated into a premium and practical package. As part of GMCs AT4 lineup, this model combines 4WD functionality with upscale interior features, advanced safety technologies, and purposeful trailering tools that support both rugged use and everyday driving.

This Sierra 1500 AT4 is powered by a robust V8 engine paired with a 10-speed automatic transmission. It includes a two-speed transfer case and an auto-locking rear differential to enhance control on rough or uneven terrain. Hill Descent Control adds further confidence when navigating steep inclines off-road. The AT4 trim also includes red recovery hooks, a signature design element that signals its off-road intent, and the black chrome header and grille insert bars further distinguish it visually from other Sierra models.

The AT4 Premium and AT4 Preferred Packages contribute a wide array of interior and tech upgrades. The cabin features Jet Black leather with Kalahari accents, floor-mounted center console, and premium floor liners with removable carpet inserts for all-weather durability. Heated second-row outboard seats and front bucket seating increase passenger comfort, while dual 120-volt power outletsone mounted in the bed and one in the interiorsupport worksite or campsite power needs.

Trailering is a core strength of this truck. The Sierra AT4 comes equipped with the Trailering Package, which includes a hitch guidance system, hitch view, an integrated trailer brake controller, and trailer camera provisions. The In-Vehicle Trailering App allows users to monitor trailer diagnostics and perform pre-departure checklists from the infotainment system. Trailer Side Blind Zone Alert and Rear Cross Traffic Braking enhance visibility and safety when towing in tighter spaces or backing up. A bed view camera and the HD Surround Vision system also assist with precise maneuvering while trailering or parking.

Technology and connectivity are prominent features throughout the cabin. A 15-inch multicolor head-up display projects customizable driving data onto the windshield, minimizing distraction. A rear camera mirror provides a wider and unobstructed view behind the vehicle. The infotainment system supports navigation and includes wireless charging, Wi-Fi hotspot capability, and multiple USB charging and data portsincluding charge-only ports in the rear and charge/data ports inside the center console. A Universal Home Remote, push-button start, and remote vehicle start system contribute to everyday convenience, while OnStar compatibility offers access to emergency and concierge services.

This truck also includes a range of advanced safety features. In addition to rear pedestrian alert, ultrasonic front and rear park assist, and the aforementioned trailering alerts, perimeter lighting and deep-tinted glass help maintain visibility and cabin privacy. A theft deterrent system is included as well.

Additional practical touches include LED cargo area lighting, a power sliding rear window with defogger, spray-on bedliner with GMC logo, rain-sensing front wipers, and rear wheelhouse liners to protect the underbody from debris and corrosion. The power-adjustable rake and telescoping steering column enhances driver ergonomics.

For buyers seeking peace of mind, every vehicle purchased comes backed by the Walt Massey 3 Day Money Back Guarantee. If the vehicle is returned in like-new condition to the original dealership within three business dayshaving been driven fewer than 300 milesa full exchange is available. If mileage exceeds that threshold, a \$1.00 per mile fee applies beyond the 300-mile limit. This guarantee ensures customers can make thei Not all rebates may apply. Some rebates are not compatible with other rebates. Offers are subject to change. See dealer for details. Price includes: $1000 - Buick & GMC