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2025 GMC SIERRA 1500 DENALI ULTIMATE 4WD 3.0L DURAMAX DIESEL MASSAGE SEATS SUNROOF SUPER CRUISE ALPINE UMBER LEATHER ONYX BLACK LANCASTER PA
This 2025 GMC Sierra 1500 Denali Ultimate 4WD is powered by the 3.0L Duramax turbo-diesel paired with a 10-speed automatic transmission. Finished in Onyx Black with the stunning Alpine Umber full-grain leather interior, this is GMC's flagship luxury pickup, loaded with premium features including massaging front seats, power sunroof, Bose 12-speaker audio, and a 15-inch Head-Up Display.
The 3.0L Duramax delivers 305 horsepower and 495 lb-ft of torque, combining impressive pulling power with excellent fuel efficiency. Rated at 22 city and 26 highway MPG, this diesel is ideal for daily driving, long highway trips, and towing a camper or boat.
The Denali Ultimate stands apart with its exclusive exterior styling, signature Denali grille, premium finishes, and distinctive luxury appointments. Onyx Black gives this truck a sharp, commanding appearance, while the Alpine Umber interior offers a level of craftsmanship rarely found in a pickup.
Inside, you'll find full-grain leather seating, massaging front seats, heated and ventilated front seats, heated rear outboard seats, and a heated steering wheel. The power sunroof, power-sliding rear window, wireless charging, and remote start make every drive more enjoyable.
The Bose Premium Series 12-speaker sound system delivers exceptional audio quality, while navigation, a multicolor 15-inch Head-Up Display, HD Surround Vision, and a Bed View Camera provide outstanding technology and convenience.
This Sierra is also built to work. Trailering equipment includes an integrated trailer brake controller, Hitch Guidance with Hitch View, trailer camera provisions, trailer tire pressure monitoring, and GMC's in-vehicle trailering app. An automatic locking rear differential and Hill Descent Control add confidence when conditions get challenging.
The MultiPro Tailgate Audio System by Kicker is another standout feature, perfect for camping, tailgating, or spending time outdoors. Additional equipment includes a spray-on bedliner, LED bed lighting, 120-volt outlets in the cab and bed, rain-sensing wipers, and front and rear parking sensors.
Safety features include Rear Cross Traffic Braking, Rear Pedestrian Detection, and Trailer Side Blind Zone Alert, helping make this full-size pickup easier to maneuver and tow with confidence.
If you're looking for a truck that combines diesel efficiency, serious torque, premium luxury, and everyday capability, this Denali Ultimate delivers. The Alpine Umber leather, massaging seats, sunroof, and Duramax diesel make this an especially desirable configuration.
See it today at Mark Martin Motors in Ephrata, serving Lancaster, Lititz, Lebanon, and York. Call or message us to check availability or schedule your test drive.