The 2025 GMC Sierra 3500HD AT4 represents a premium heavy-duty truck engineered for those who demand capability, comfort, and sophistication. This Sterling Metallic Gray model combines genuine utility with refined interior appointments, making it equally at home on the job site or the open road.
This truck is equipped with an impressive array of features designed to enhance your driving experience:
- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- AT4 Premium Plus Package with power sunroof and Technology Package
- Gooseneck/5th Wheel Prep Package for heavy-duty towing applications
- Bose Premium 7-Speaker Sound System with SiriusXM 360L trial subscription
- HD Surround Vision with Bed View Camera and trailer camera provisions
- Wireless Phone Projection and wireless charging capability
- Heated and ventilated front seats with heated rear outboard seats
- Spray-On Pickup Bedliner with GMC logo
- Off-Road High Clearance Step and 2-Speed Active Transfer Case
- Ultrasonic Front and Rear Park Assist with Rear Cross Traffic Alert
- 20" High Gloss Black 8-Spoke Aluminum wheels
- Multicolor 15" Diagonal Head-Up Display
- Remote Vehicle Starter System and keyless open and start
The AT4 Premium Plus Package elevates this truck with a power sunroof and premium technology integration, while the Gooseneck/5th Wheel Prep Package demonstrates GMC's commitment to supporting serious hauling needs. The hitch platform accepts either gooseneck or 5th wheel hitches, and the bed-mounted 7-pin trailer harness ensures you're ready for demanding towing tasks.
Inside, the cab reflects truck luxury with perforated leather front seats, dual-zone automatic climate control, and a heated steering wheel for cold weather comfort. The 13.4-inch information display provides clear visibility of critical vehicle data, while steering wheel audio controls keep you focused on the road.
Safety is paramount in this Sierra, with features including Automatic Emergency Braking, Front Pedestrian Braking, Lane Departure Warning, Trailer Side Blind Zone Alert, and a comprehensive airbag system. The Safety Alert Seat provides additional awareness during critical moments.
This 2025 Sierra 3500HD AT4 is ready to handle whatever you bring to itâ"whether that's serious work or weekend adventures. Visit our showroom to experience the commanding presence and refined capability of this premium heavy-duty truck.
