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2025 GMC SIERRA 2500HD AT4X AEV EDITION 6.6L DURAMAX DIESEL AEV GOOSENECK PREP SUNROOF ONYX BLACK LANCASTER PA
If you're looking for one of the most capable heavy-duty trucks GMC has ever built, this 2025 GMC Sierra 2500HD AT4X AEV Edition is in a league of its own.
Finished in Onyx Black and powered by the legendary 6.6L Duramax Turbo Diesel, this truck combines luxury, serious towing capability, and factory-engineered off-road performance into one incredible package.
Built in partnership with American Expedition Vehicles (AEV), the AT4X AEV Edition is designed for truck owners who demand more. High-approach stamped steel AEV front bumper, stamped steel AEV rear bumper, gloss black AEV wheels, AEV floor liners, and aggressive factory styling make this one of the most sought-after HD trucks on the market.
Under the hood is GM's proven 6.6L Duramax Turbo Diesel, paired with the Allison-inspired 10-speed automatic transmission. With massive torque, exceptional towing capability, and outstanding long-term reliability, it's ready for everything from fifth wheels and horse trailers to campers, equipment, and long-distance travel.
The premium interior is every bit as impressive.
Full-grain Obsidian Rush leather seating.
Heated and ventilated front seats.
Heated rear outboard seats.
Power sunroof.
Premium Bose 12-speaker sound system.
15-inch Head-Up Display.
Rear Camera Mirror.
Wireless charging.
This truck delivers first-class comfort whether you're on the highway or miles from the pavement.
When it comes to towing, it's fully equipped.
Factory Gooseneck/5th Wheel Prep Package.
Trailer Camera Provisions.
Trailer Viewing Software.
Trailer Side Blind Zone Alert.
Trailer Tire Pressure Monitoring.
HD Surround Vision.
Bed View Camera.
Everything you need for confident towing is already built in.
Off-road capability is where the AT4X AEV truly separates itself from the competition. Hill Descent Control, two-speed transfer case, AEV armor, premium suspension tuning, and factory heavy-duty protection allow this truck to confidently tackle trails while remaining comfortable on the highway.
Additional highlights include LED cargo lighting, spray-on bedliner, roof marker lamps, rain-sensing wipers, rear wheelhouse liners, remote start, front and rear park assist, Safety Alert Seat, and wireless Apple CarPlay and Android Auto.
If you're searching for a 2025 GMC Sierra 2500HD AT4X AEV Edition for sale in Pennsylvania, a Duramax diesel truck near Lancaster, Ephrata, Lititz, Harrisburg, York, Reading, Lebanon, Allentown, Philadelphia, Baltimore, Maryland, New Jersey, or Delaware, this truck deserves a serious look.
Finding a 2025 Sierra 2500HD AT4X AEV Edition equipped with the 6.6L Duramax Diesel, Gooseneck Prep Package, Head-Up Display, Bose Premium Audio, HD Surround Vision, factory AEV equipment, and premium full-grain leather is exceptionally rare.
Available now at Mark Martin Motors in Ephrata, PA, proudly serving Lancaster County and customers nationwide.
Call or message Mark Martin Motors today before this incredible Sierra 2500HD AT4X AEV Edition is gone.