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2025 GMC SIERRA 2500HD DENALI 4WD DURAMAX DIESEL X31 OFF-ROAD PKG SUNROOF GOOSENECK PREP SUMMIT WHITE LANCASTER PA
This is the heavy-duty truck buyers wait for.
A 2025 GMC Sierra 2500HD Denali 4WD powered by the legendary 6.6L Duramax Turbo Diesel and backed by the proven Allison 10-Speed Automatic Transmission delivers luxury, capability, and towing confidence that few trucks on the road can match.
And this one is loaded with the features serious truck buyers want.
Finished in Summit White, this Denali stands out with its signature chrome grille, black 20-inch wheels, smoked amber roof marker lamps, power sunroof, spray-in bedliner, and bold heavy-duty stance. It looks every bit like the premium diesel truck it is.
Then there's the engine.
The legendary 6.6L Duramax Diesel.
Massive torque.
Outstanding towing capability.
Exceptional reliability.
And effortless power whether you're towing a fifth wheel, horse trailer, toy hauler, equipment trailer, or large camper.
Paired with the Allison 10-speed transmission, this Sierra delivers smooth shifts, impressive pulling power, and the durability that has made Duramax trucks some of the most sought-after heavy-duty pickups on the market.
And this truck is already set up for serious towing.
Gooseneck / 5th Wheel Prep Package.
Integrated Trailer Technology.
Trailer Camera Provisions.
Trailer Viewing Software.
Trailer Side Blind Zone Alert.
HD Surround Vision.
Bed View Camera.
This is exactly the setup RV owners, contractors, and heavy-haul buyers search for.
Then you step inside.
And that's where the Denali trim separates itself from ordinary work trucks.
Perforated heated and ventilated leather seating.
Heated rear seats.
Power sunroof.
Wireless charging.
Bose Premium Audio System.
HD Surround Vision.
Remote start.
Power sliding rear window.
Premium materials throughout the cabin.
This truck feels more luxury SUV than heavy-duty pickup.
The X31 Off-Road Package adds even more capability with off-road tuning, Hill Descent Control, skid plate protection, and enhanced confidence when the pavement ends.
Whether you're towing across Pennsylvania, hauling equipment to the jobsite, or taking the family on a weekend getaway, this Sierra Denali is built to do it all.
Technology is everywhere.
HD Surround Vision.
Rear Cross Traffic Alert.
Safety Alert Seat.
Wireless Apple CarPlay and Android Auto.
Trailer Camera Integration.
Ultrasonic Front and Rear Park Assist.
This truck helps make towing and daily driving easier than ever.
If you're searching for a 2025 GMC Sierra 2500HD Denali Duramax 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 Denali equipped with the Duramax Diesel, Allison Transmission, Gooseneck Prep Package, X31 Off-Road Package, Power Sunroof, Bose Audio, HD Surround Vision, and premium Denali interior is exactly the type of truck buyers wait months to find.
Available now at Mark Martin Motors in Ephrata, PA, proudly serving Lancaster County and customers nationwide.
Don't wait. Call or message Mark Martin Motors today before this incredible Sierra 2500HD Denali Duramax is gone.