2025 GMC Sierra AT4X – Sterling Metallic
The 2025 GMC Sierra AT4X in stunning Sterling Metallic delivers the perfect combination of luxury, off-road capability, and serious towing performance. Powered by the legendary V8 Duramax Diesel engine, it provides the torque and reliability needed for heavy work, long-distance touring, and rugged adventures.
Designed for demanding towing applications, the Sierra AT4X can tow up to 8,000 kg with an approved air-braked system, with 450 kg on the towbar. It can be configured at 4495 kg GVM to drive on a standard car licence, or 5126 kg GVM as a light truck, and features an impressive 12,474 kg GCM for maximum towing and payload capability.
From the factory, the AT4X is built for off-road performance with a 1.5-inch suspension lift, Multimatic® DSSV dampers, rear electronic-locking differential, heavy-duty skid plates, and aggressive 35-inch Goodyear® Territory MT tyres.
Inside, the premium Obsidian Rush interior features full-grain leather seating with Vanta Ash wood trim, along with 16-way heated and ventilated front seats with massage. Advanced technology includes a 13.4-inch touchscreen with Apple CarPlay, Adaptive Cruise Control with trailering, Head-Up Display, and up to 14 camera views with HD Surround Vision.
The 2025 Sierra AT4X delivers bold styling, luxury comfort, and extreme capability — ready for work, adventure, and everything in between.
