New 2025 GMC Sierra 1500 AT4

Description for 2025 GMC Sierra 1500 AT4 Truck

The 2025 GMC Sierra 1500 AT4 is a well-equipped full-size truck designed for those who want advanced off-road capability without sacrificing premium technology or comfort. Built on a 4WD Crew Cab platform and finished in Onyx Black, this AT4 trim combines rugged hardware with refined appointments, particularly with its Jet Black leather interior enhanced by Kalahari accents.

Powering the AT4 is a 3.0L inline-six Duramax Turbo-Diesel engine paired with a 10-speed automatic transmission. This setup delivers strong torque for towing and off-road climbing, while maintaining efficiency for long-distance driving. The 220-amp alternator and heavy-duty air filter are designed to meet the demands of challenging environments, and the off-road high-clearance step adds functional ground clearance for trail-oriented use. The truck's Hill Descent Control and Auto-Locking Rear Differential further enhance traction and control on rough terrain.

This Sierra 1500 AT4 is equipped with the AT4 Preferred and AT4 Premium Packages, which bring together a wide range of upscale and trail-ready features. Exterior design is marked by black chrome grille insert bars and red front recovery hooks, while the spray-on bedliner with GMC logo and LED cargo lighting increase durability and visibility in the bed area. The Trailering Package adds Hitch Guidance, Hitch View, integrated trailer brake controller, and trailer camera provisions, along with advanced tools such as the In-Vehicle Trailering App and Trailer Side Blind Zone Alert to improve safety and convenience when towing.

Inside the cabin, the vehicle offers a combination of comfort and innovation. Heated and ventilated front seats, along with heated second-row outboard seats, ensure occupant comfort in varying climates. The front bucket seats are trimmed in leather, and the driver benefits from a power rake and telescoping steering column. Convenience continues with a power sliding rear window, power express front and rear windows, keyless open and start, remote vehicle starter, and push-button ignition.

Technology is a strong point in the AT4. The centerpiece is a multicolor 15-inch diagonal head-up display, projecting key data directly into the drivers line of sight. A premium 7-speaker Bose sound system provides high-quality audio, while the HD Surround Vision system and rear camera mirror enhance visibility and parking accuracy. The infotainment system includes built-in navigation, SiriusXM with 360L trial, wireless device charging, Wi-Fi hotspot capability, and full smartphone integration.

Safety and driver assistance features include Ultrasonic Front and Rear Park Assist, Rear Cross Traffic Braking, Rear Pedestrian Detection, and Trailer Side Blind Zone Alert. These technologies contribute to greater awareness around the vehicle, especially when maneuvering in tight or obstructed areas.

The AT4 also includes practical elements such as all-weather floor liners with removable carpet inserts, color-keyed carpeting, deep-tinted glass, perimeter lighting, and a universal home remote. With its refined interior, functional off-road enhancements, and a strong list of connectivity and safety features, this Sierra 1500 AT4 provides a well-rounded solution for drivers who require both capability and comfort.

Additionally, your purchase is protected by the Walt Massey 3 Day Money Back Guarantee. If you decide the Sierra 1500 AT4 isnt right for you, you can return it within three business days before 5 p.m. CST, as long as the truck is in like-new condition and has been driven fewer than 300 miles. For mileage beyond 300, a charge of \$1.00 per additional mile will apply. This policy offers added peace of mind as you evaluate whether this vehicle meets your needs.

Would you like a breakdown of how the A Price includes: $2500 - Buick and GMC Purchase Loyalty Program. Exp. 06/02/2025 $2750 - Buick & GMC Consumer Cash Program. Exp. 06/02/2025 $500 - GM Mil