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Meet the 2025 GMC Sierra 3500HD AT4, a powerful diesel pickup engineered for serious work and weekend adventures alike. This silver heavy-duty truck combines the legendary Duramax 6.6L V8 Turbodiesel engine with premium AT4 capability, backed by a clean, single-owner history with no accidents. Whether you're towing, hauling, or exploring off-road terrain, this Sierra delivers the performance and refinement you demand.
**Key Features:**
- Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic and 4WD
- AT4 Premium Plus Package with off-road enhancements
- Gooseneck/5th Wheel and Snow Plow Prep packages for ultimate versatility
- Power-retractable assist steps with black finish
- Engine block heater for reliable cold-weather operation
- 220-amp alternator for heavy electrical loads
- Power sunroof and premium GMC infotainment system
- Heated and ventilated leather front seats with 10-way power adjustment
- Advanced safety suite including automatic emergency braking and surround vision camera
This truck arrives well-equipped with modern technology and premium comfort features designed for both work and daily driving. The AT4 package elevates capability with specialized suspension, skid plates, and terrain management systems. With 25,930 miles showing meticulous care, this one-owner Sierra stands ready for whatever you put it to work on.
Experience the difference a certified, low-mileage heavy-duty diesel can make. Schedule your test drive today and discover why the Sierra 3500HD AT4 is the choice for serious truck owners.