This is the kind of truck that makes long distances feel shorter and tough jobs feel easier. The 2026 GMC Sierra 1500 AT4 Duramax Diesel pairs the impressive torque and long-range capability of a 3.0L Duramax Turbo-Diesel with premium comfort and serious off-road capability, giving you a truck that's equally at home towing through the Kootenays, exploring backcountry roads, or handling the daily commute with ease.Inside, the AT4's premium cabin is designed for long days and weekend escapes alike. You'll enjoy heated and ventilated front seats, heated rear outboard seats, a heated steering wheel, and a power sunroof that opens up the cabin. The impressive 13.4-inch GMC Premium Infotainment System with Google Built-In, Bose® premium audio system, wireless phone projection, and wireless charging help keep everyone connected and entertained wherever the road leads.When conditions change, the Sierra AT4 is ready. An off-road suspension, automatic locking rear differential, Hill Descent Control, skid plates, and aggressive 20-inch wheels with Goodyear Wrangler Territory MT tires provide confidence on rough terrain, while advanced technology like HD Surround Vision, Bed View Camera, Head-Up Display, and Adaptive Cruise Control make towing, parking, and highway driving easier than ever. If you're looking for a truck that feels equally at home on a mountain road, at Champion Lakes, or pulling a trailer through the Kootenays, this Sierra deserves a closer look. Visit Champion Chevrolet in Trail and experience it for yourself.Key Features:? 3.0L Duramax Turbo-Diesel with 10-speed automatic transmission? AT4 Off-Road Capability with suspension, skid plates & MT tires? Advanced Trailering Technology with Hitch Guidance & Trailer Alerts? Premium Comfort Features with heated/ventilated seating & sunroof? HD Camera & Safety Technology with Surround Vision & Head-Up Display