Used 2025 Gmc Sierra 1500 AT4

Built for serious capability with premium comfort, this Sierra AT4 blends rugged off-road performance with refined technology. The powerful 3.0L inline-6 turbo-diesel paired with a smooth 10-speed automatic transmission delivers impressive torque, efficiency, and confidence whether you're towing, commuting, or heading into the mountains. Inside you'll find Jet Black leather with Kalahari accents, combining upscale materials with the durability expected from a true off-road truck. The AT4 comes loaded with cutting-edge features designed to keep you informed, connected, and in control. Engineered to make towing and hauling easier and safer with integrated tools and cameras. The AT4 is purpose-built for rugged terrain and backcountry adventures.