Meet the 2025 GMC Sierra 2500HD AT4, a heavy-duty truck built to handle serious work and weekend adventures with confidence and capability.- Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic transmission- 4WD with 2-speed active transfer case and off-road suspension- AT4 Preferred Package and X31 Off-Road Package- Hill Descent Control for enhanced off-road performance- Power sliding rear window with defogger- LED smoked amber roof marker lamps- Universal home remote- Bose premium 7-speaker sound system with SiriusXM 360L- Apple CarPlay and Android Auto connectivity- HD surround vision with bed view camera and trailer camera provisions- Heated and ventilated leather front seats with 10-way power adjustment- Spray-on pickup bedliner with GMC logo- 20-inch high-gloss black aluminum wheels- Automatic emergency braking and front pedestrian brakingThis Sierra 2500HD arrives with a fresh oil change, ready to serve your demanding needs. The Duramax diesel engine pairs with the 10-speed automatic transmission to deliver the torque and pulling power you expect from a truck in this class. The 4WD system includes a 2-speed active transfer case and off-road-tuned suspension, making this AT4 equally comfortable on pavement and unpaved terrain.The AT4 Preferred Package elevates your experience with premium features like the universal home remote and those distinctive LED smoked amber roof marker lamps. The X31 Off-Road Package adds Hill Descent Control, giving you additional confidence when tackling steep grades. The power sliding rear window with defogger adds practicality for ventilation and rear visibility.Inside, the Sierra surrounds you with comfort and technology. The Bose premium sound system pairs with SiriusXM 360L satellite radio to keep you entertained throughout your day. Apple CarPlay and Android Auto keep your smartphone seamlessly integrated, while the wireless charging and multiple USB ports ensure your devices stay powered. The dual-zone climate control, heated and ventilated leather front seats, and heated steering wheel ensure comfort in any season.Safety and visibility are prioritized throughout the cabin. The automatic emergency braking system, forward collision alert, and front pedestrian braking work together to help protect you and your passengers. The HD surround vision system, bed view camera, and trailer camera provisions make maneuvering and backing up considerably easier. Lane departure warning, rear cross-traffic alert, and ultrasonic park assist round out the comprehensive safety suite.Practicality extends to every detail. The spray-on bedliner with GMC logo protects your cargo area, while the 3.73 rear axle ratio balances performance and efficiency. LED cargo area lighting illuminates your workspace, and the 120-volt power outlets let you operate tools and devices anywhere. The trailer side blind zone alert and in-vehicle trailering system app make towing more intuitive.The 2025 Sierra 2500HD AT4 is ready to work as hard as you do. Visit our showroom today to experience this capable truck firsthand and discuss how it can become part of your next chapter.