- POWER SUNROOF
- HEATED DRIVER & FRONT OUTBOARD PASSENGER SEATING
- HEATED STEERING WHEEL
- ADAPTIVE CRUISE CONTROL
- DURAMAX 6.6L V8 TURBO DIESEL
-  AT4 PREMIUM PLUS PACKAGE
- STEERING WHEEL AUDIO CONTROLS
- GOOSENECK/5TH WHEEL PREP PACKAGE
- OFF-ROAD HIGH CLEARANCE STEPS

Command the road and conquer any terrain with the 2025 GMC Sierra 3500HD AT4—where power meets precision in a diesel-driven masterpiece.

For those who demand more from their truck, the GMC Sierra 3500HD AT4 delivers with its robust Duramax 6.6L Turbo-Diesel V8 engine, boasting an impressive 470 horsepower and 975 lb-ft of torque. This powerhouse ensures you have the strength to tackle any job, while the 10-speed automatic transmission provides seamless shifting for an unparalleled driving experience. The 4x4 drivetrain, combined with a locking/limited slip differential, guarantees superior traction and control, whether you're navigating city streets or off-road trails.

The Onyx Black exterior is complemented by practical features such as running boards and an integrated tailgate step, making access and loading a breeze. Inside, the crew cab offers luxury and comfort with leather seats, heated and cooled front seats, and a heated steering wheel, ensuring every journey is as comfortable as it is capable. Advanced safety features like blind spot monitoring, cross-traffic alert, and front collision mitigation provide peace of mind, while the adaptive cruise control and navigation system keep you connected and on course. Experience the perfect blend of rugged capability and refined comfort with the GMC Sierra 3500HD AT4.