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Disclaimer:
The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
1Dealer Discount applied to everyone
ALL VEHICLES SUBJECT TO A $225 DEALER DOC FEE. NEW VEHICLES PRE-LOADED WITH OUR VIP PACKAGE FOR $2995. THIS INCLUDES 1 YEAR OIL CHANGES AND TIRE ROTATIONS. ONE YEAR INTERIOR AND EXTERIOR PROTECTION. WINDOW TINT, ALL-WEATHER FLOOR MATS, AND WHEEL LOCKS. 1 YEAR THEFT PROTECTION. LIFETIME POWERTRAIN WARRANTY* SOME EXCLUSIONS APPLY TO THE LIFETIME WARRANTY
- 6.6L V8 Diesel Turbocharged (Duramax) with 470 hp and 975 lb-ft of torque
- Max Trailering Package with 3500 HD Frame and 12 Rear Axle
- Power Sunroof
- Bose Premium 7-Speaker Sound System with SiriusXM 360L Trial
- HD Surround Vision with Bed View Camera and Trailer Camera Provisions
- Wireless Phone Projection and Apple CarPlay/Android Auto
- Heated and Ventilated Leather-Appointed Front Seats
- Multicolor 15 Diagonal Head-Up Display
- Ultrasonic Front & Rear Park Assist
- Wireless Charging Pad
- X31 Off-Road Package with Hill Descent Control
- Power-Retractable Assist Steps with LED Lighting
- 20 High Gloss Black Aluminum Wheels
- Spray-On Pickup Bedliner with GMC Logo
- Off-Road Suspension with 2-Speed Active Transfer Case
The 2025 GMC Sierra 2500HD AT4 in gray combines capability with refined comfort. Finished in a sophisticated gray exterior, this truck stands ready for both professional demands and daily driving. The rugged styling reflects the AT4's off-road heritage while maintaining the polished presence that defines modern GMC design.
Under the hood sits GMC's proven 6.6L V8 Diesel Turbocharged engine paired with a 10-speed automatic transmission and 4WD. This powertrain delivers the torque and pulling power expected from a heavy-duty truck, with capability enhanced by the Max Trailering Package. The package includes a reinforced 3500 HD frame, leaf springs, and 12 rear axle to handle serious towing and hauling responsibilities.
Inside, the AT4 focuses on driver-oriented comfort and control. Premium leather seating surfaces complement heated and ventilated front seats, while the heated steering wheel adds luxury during cold months. The multicolor 15 head-up display keeps critical information visible without distraction. Dual climate zones and power adjustments on both driver and passenger seats ensure personalized comfort for all occupants.
Technology integration enhances both convenience and safety. Wireless phone projection connects your smartphone seamlessly, while the Bose premium audio system elevates every drive. The HD surround vision system with bed view camera and trailer camera provisions provides comprehensive visibility, and ultrasonic park assist helps navigate tight spaces with confidence. A wireless charging pad and multiple USB ports keep devices powered throughout your journey.
The X31 Off-Road Package and 2-Speed Active Transfer Case prove this truck handles challenging terrain. Hill Descent Control manages steep descents, while the off-road suspension absorbs rough conditions. Power-retractable assist steps with integrated LED lighting combine practicality with refined styling. The spray-on bedliner protects your cargo area while displaying the GMC logo with pride.
This 2025 Sierra 2500HD AT4 represents a complete package a truck engineered for real-world work and designed for genuine comfort. Whether you're managing job site demands or enjoying weekend adventures, this vehicle delivers the capability and quality GMC is known for. Visit our showroom to experience the commanding presence and refined capability this truck brings to your ownership.