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2025 GMC SIERRA 2500HD AT4X AEV EDITION 4WD DURAMAX 6.6L TURBO DIESEL V8 GOOSENECK/5TH WHEEL PREP MASSAGE SEATS ONYX BLACK LANCASTER PA
This 2025 GMC Sierra 2500HD AT4X AEV Edition 4WD is powered by the legendary Duramax 6.6L Turbo Diesel V8 paired with a 10-speed Allison automatic transmission, delivering exceptional towing capability, outstanding durability, and premium off-road performance. Finished in Onyx Black, this Sierra is equipped with the AT4X AEV Edition, Gooseneck/5th Wheel Prep Package, and front massage seats.
The AT4X AEV Edition is GMC's most capable factory-built heavy-duty off-road truck. Developed in partnership with American Expedition Vehicles (AEV), it features stamped steel front and rear bumpers, AEV-specific suspension tuning, skid plate protection, 18-inch AEV Salta wheels, and trail-ready hardware that gives it true backcountry capability while retaining heavy-duty towing performance.
The Duramax 6.6L Turbo Diesel remains one of the most respected engines in the heavy-duty truck market, offering incredible torque, long-term reliability, and effortless performance whether you're towing a large fifth-wheel camper or hauling equipment for work. The factory Gooseneck/5th Wheel Prep Package means this truck is ready for serious towing from day one.
Inside, the AT4X delivers a luxury experience with full-grain leather seating, heated and ventilated front seats with massage function, heated rear seats, a Bose premium audio system, HD Surround Vision, a head-up display, wireless charging, a rear camera mirror, and trailer camera provisions for added confidence behind the wheel.
With its AEV engineering, legendary Duramax diesel, premium interior, and factory towing equipment, this Sierra 2500HD stands among the most capable heavy-duty trucks available.
See this Sierra today at Mark Martin Motors in Ephrata, proudly serving Lancaster, Lititz, Lebanon, and York. Call or message us today to check availability or schedule your test drive.