Meet the 2025 GMC Sierra 3500HD AT4â"a heavy-duty truck designed for those who demand capability, comfort, and confidence in every situation.
- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque
- Gooseneck/5th Wheel Prep Package for serious hauling applications
- AT4 Premium Plus Package with power sunroof and technology enhancements
- Heavy Duty Front Spring/Camper Package for enhanced load management
- Power-Retractable Assist Steps with integrated LED lighting
- 4WD with 2-Speed Active Transfer Case and Off-Road High Clearance Step
- Bed View Camera with trailer camera provisions and Hitch Guidance
- Spray-On Pickup Bedliner with GMC Logo for bed protection
- HD Surround Vision and trailer side blind zone alert for enhanced awareness
- Universal Vehicle Module with custom configuration support for upfitted equipment
- Premium audio system with SiriusXM 360L trial subscription
- Heated and ventilated leather front seats with heated rear outboard seats
- Wireless phone projection and dual USB charging ports
- 220-amp alternator and engine block heater for reliability in demanding conditions
This Sierra 3500HD arrives in striking Silver and represents the pinnacle of heavy-duty engineering. The AT4 package establishes this truck as a premium off-road and work-capable vehicle, blending rugged capability with refined comfort. The Duramax diesel engine delivers the power and torque needed for serious work, whether you're towing, hauling, or navigating challenging terrain.
The Premium Plus Package elevates your daily driving experience with technology and convenience features that reduce fatigue during long days on the road. From the power sunroof to the touchscreen infotainment system, every detail has been thoughtfully integrated. The heated and ventilated front seats keep you comfortable in any season, while the climate-controlled rear seating ensures passengers remain satisfied during extended trips.
Capability extends beyond raw power through smart technology. The HD Surround Vision system, trailer camera provisions, and Hitch Guidance provide the visibility you need when maneuvering complex towing situations. The Gooseneck/5th Wheel Prep Package delivers a platform ready for serious trailering work, while trailer tire pressure sensors keep critical equipment monitored during transport.
The AT4 trim distinguishes this Sierra through its commitment to off-road readiness. The Off-Road High Clearance Step, 2-Speed Active Transfer Case, and specialized suspension components position this truck as capable off the highway. Meanwhile, the spray-on bedliner protects your cargo area from wear and weather, preserving your investment.
Inside, the Sierra reflects GMC's commitment to professional environments. The Universal Vehicle Module enables integration of custom equipment controls, making this truck adaptable to specialized work applications. Premium floor liners, wireless charging, and multiple power outlets support your mobile office needs.
This 2025 Sierra 3500HD AT4 stands ready for work that demands excellence. We invite you to experience its commanding presence, refined capability, and purposeful engineering. Contact us today to schedule a test drive and discover how this truck aligns with your goals.
