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2025 GMC SIERRA 1500 AT4 4WD 3.0 DURAMAX DIESEL PREMIUM PKG TECH PKG SUNROOF ONYX BLACK LANCASTER PA
This is the truck that does everything.
Luxury, fuel economy, off-road capability, towing performance, and everyday comfort all wrapped into one incredibly well-equipped package.
This 2025 GMC Sierra 1500 AT4 4WD is powered by the highly sought-after 3.0L Duramax Turbo Diesel and loaded with the AT4 Premium Package, Technology Package, panoramic-style sunroof, premium leather interior, and advanced towing technology.
Finished in Onyx Black, this Sierra AT4 has an aggressive stance that immediately separates it from ordinary pickups. The signature AT4 grille, red recovery hooks, off-road appearance, high-clearance steps, black accents, and factory lifted stance create one of the best-looking trucks on the road today.
Then there's the engine.
The legendary 3.0L Duramax Diesel.
This is one of the hottest engines in the truck market right now.
Outstanding fuel economy.
Impressive towing capability.
Massive low-end torque.
Quiet operation.
And exceptional highway driving manners.
It's the perfect engine for buyers who want diesel power without stepping into a heavy-duty truck.
Whether you're towing a camper, hauling a boat to Raystown Lake, commuting through Lancaster County, or heading out on a long road trip, this Duramax delivers.
Then GMC adds the highly desirable AT4 Premium Package and Technology Package.
This is where the truck really shines.
Premium leather seating with Kalahari accents.
Heated and ventilated front seats.
Heated rear seats.
Power sliding rear window.
Wireless charging.
Premium Bose sound system.
Multicolor 15-inch Head-Up Display.
Rear Camera Mirror.
HD Surround Vision.
Navigation.
Rain-sensing wipers.
Power-adjustable steering column.
The interior feels more luxury SUV than pickup truck.
And because it's an AT4, capability comes standard.
Auto-locking rear differential.
Off-road suspension.
Hill Descent Control.
Integrated Trailer Brake Controller.
Trailer Camera Provisions.
Trailer Side Blind Zone Alert.
Hitch View.
Hitch Guidance.
HD Surround Vision.
This truck was built for towing and adventure.
The Technology Package adds some of GMC's most impressive features including the Head-Up Display, Rear Camera Mirror, and HD Surround Vision system, making parking, towing, and daily driving easier than ever.
And let's not forget the details buyers love.
Power sunroof.
Spray-in bedliner.
LED cargo lighting.
Remote start.
Wireless Apple CarPlay and Android Auto.
120-volt outlets in both the cab and bed.
Premium Bose audio.
This truck leaves very little on the options list.
If you're searching for a 2025 GMC Sierra 1500 AT4 Duramax for sale in Pennsylvania, a 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 AT4 equipped with the 3.0 Duramax Diesel, Premium Package, Technology Package, Head-Up Display, HD Surround Vision, Bose Audio, Sunroof, and Premium Leather 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 AT4 Duramax is gone.