*2025 GMC Sierra 2500HD AT4 Crew Cab 4WD | Duramax® 6.6L Turbo-Diesel*Conquer the toughest jobs and the roughest terrain in this *2025 GMC Sierra 2500HD AT4 Crew Cab 4WD*. Equipped with the legendary *6.6L Duramax® Turbo-Diesel V8* paired with the renowned *Allison® 10-speed automatic transmission*, this heavy-duty pickup delivers exceptional power, incredible towing capability, and the confidence to handle virtually any task. The Duramax is rated at *470 horsepower and 975 lb-ft of torque*, making it one of the most capable diesel powertrains in its class.Purpose-built for adventure, the *AT4* trim combines premium comfort with serious off-road capability. Featuring a factory off-road suspension, Rancho® shocks, skid plates, hill descent control, an automatic locking rear differential, and a two-speed transfer case, this Sierra is equally at home on the trail, at the job site, or towing your camper across the country.Inside, you'll enjoy a refined cabin loaded with premium materials and advanced technology designed to keep you comfortable, connected, and in control.*Key Features Include:* * 6.6L Duramax® Turbo-Diesel V8 Engine * Allison® 10-Speed Automatic Transmission * Four-Wheel Drive * AT4 Premium Off-Road Package * Rancho® Off-Road Suspension * Automatic Locking Rear Differential * Two-Speed Autotrac® Transfer Case * Skid Plates & Hill Descent Control * Crew Cab with Spacious Full-Size Rear Seating * Leather-Appointed Interior with Heated & Ventilated Front Seats * Heated Steering Wheel * 13.4-Inch GMC Premium Infotainment Touchscreen * 12.3-Inch Digital Driver Information Center * Wireless Apple CarPlay® & Android Auto™ * Google Built-In Compatibility * Bose® Premium Audio System * Dual-Zone Automatic Climate Control * Remote Start & Remote Keyless Entry * MultiPro™ Tailgate * ProGrade® Trailering System * HD Rear Vision Camera * LED Headlights, Fog Lights & Cargo Lighting * Forward Collision Alert * Automatic Emergency Braking * Lane Keep Assist with Lane Departure Warning * Blind Zone Steering Assist with Trailer Coverage * Rear Cross Traffic Braking * Trailer Side Blind Zone AlertWhether you're towing heavy equipment, hauling a fifth wheel, or simply looking for a premium heavy-duty truck, this *2025 GMC Sierra 2500HD AT4 Duramax Diesel* delivers uncompromising capability with first-class comfort. Combining bold AT4 styling, advanced trailering technology, premium interior amenities, and GMC's legendary Duramax performance, this Sierra is built to tackle the biggest jobs while keeping you comfortable every mile of the journey.