The 2025 GMC Sierra 3500HD AT4 is a powerful and capable heavy-duty pickup that's ready to take on any challenge. With its robust Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission, this truck delivers exceptional performance and towing capacity.<br><br>- 360 degree Camera<br>- 5th Wheel Hitch<br>- Active Parking Assist<br>- Adaptive Cruise Control<br>- Adaptive Headlights<br>- Android Auto<br>- Apple CarPlay<br>- Backup Camera<br>- Blind-Spot Monitors<br>- Bluetooth Hands-Free<br>- Collision Avoidance System<br>- Collision Warning System<br>- Heads-Up Display<br>- Heated and Cooled Seats<br>- Keyless Access with Push Button Start<br>- Touchscreen Controls<br>- Trailer Brake<br>- Wi-Fi Hotspot<br><br>This Sierra 3500HD AT4 also comes equipped with the AT4 Preferred Package, AT4 Premium Plus Package, Gooseneck/5th Wheel Prep Package, Preferred Equipment Group 4SB, Technology Package, and X31 Off-Road Package, giving you a wealth of premium features and capabilities.<br><br>Enjoy the exceptional audio experience of the Bose Premium 7-Speaker Sound System, along with SiriusXM with 360L for endless entertainment. Stay connected with wireless charging, wireless phone projection, and a 120-volt power outlet in the bed. Safety and convenience features like Rear Cross Traffic Alert, Trailer Side Blind Zone Alert, and Ultrasonic Front & Rear Park Assist provide added peace of mind.<br><br>Whether you're tackling tough jobs or hitting the open road, the 2025 GMC Sierra 3500HD AT4 is the ultimate heavy-duty companion. Experience the power, capability, and premium amenities that make this truck a true standout in its class.<br><br>Servicing the Bozeman, Butte, Billings, Great Falls, Missoula, Kalispell, Helena, and Great Southwest Montana areas for over 21 years. We offer transparency with the opportunity to build your deal online, buy from home, or visit one of our clean, state of the art Ressler facilities. We also offer remote test drives and vehicle delivery within the Gallatin Valley. As part of the Ressler group, we are "Community Born, Community Driven."