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2025 GMC SIERRA 1500 AT4 4WD 3.0L DURAMAX TURBO-DIESEL I6 AT4 PREMIUM PACKAGE TECHNOLOGY PACKAGE ONYX BLACK LANCASTER PA
This 2025 GMC Sierra 1500 AT4 4WD is powered by the highly efficient 3.0L Duramax Turbo-Diesel I6 paired with a 10-speed automatic transmission, delivering outstanding torque, impressive fuel economy, and exceptional towing capability. Finished in Onyx Black, this Sierra is equipped with the AT4 Premium Package, Technology Package, Power Sunroof, and premium off-road features that make it one of the most versatile trucks in GMC's lineup.
The 3.0L Duramax Turbo-Diesel is known for its smooth power delivery, remarkable highway fuel efficiency, and abundant low-end torque, making it an excellent choice for towing campers, boats, and enclosed trailers while still providing impressive everyday driving range. Combined with an integrated trailer brake controller, Hitch View, Trailer Camera Provisions, Trailer Side Blind Zone Alert, and the In-Vehicle Trailering System App, this Sierra is built to tow with confidence.
The AT4 trim is designed for drivers who enjoy exploring beyond the pavement. An auto-locking rear differential, Hill Descent Control, red recovery hooks, off-road suspension tuning, and high-clearance styling provide the capability needed for hunting camps, backroads, and weekend adventures without sacrificing daily comfort.
Inside, the AT4 Premium Package adds a luxurious touch with perforated leather seating in Jet Black with Kalahari accents, heated and ventilated front seats, heated rear outboard seats, a power sunroof, wireless charging, and a premium Bose sound system. The Technology Package enhances every drive with a 15-inch Head-Up Display, HD Surround Vision, Rear Camera Mirror, and advanced driver-assistance technologies that make maneuvering and towing easier than ever.
Finished in Onyx Black, this Sierra combines rugged off-road capability with premium styling and modern technology, making it equally at home on the worksite, the highway, or the trail.
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.