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2025 GMC SIERRA 2500HD DENALI ULTIMATE 4WD DURAMAX DIESEL ONYX BLACK LANCASTER PA
HEAVY-DUTY TORQUE. ULTIMATE TRIM. ZERO COMPROMISE.
This 2025 GMC Sierra 2500HD Denali Ultimate 4WD in Onyx Black is the top of the food chain in the HD world. Under the hood sits the legendary 6.6L Duramax V8 Turbodiesel paired with a 10-speed automatic transmission, delivering massive torque, confident towing power, and long-haul durability.
If you are searching for a 2025 GMC Sierra 2500HD Duramax Denali Ultimate for sale near Lancaster, Harrisburg, York, or Reading, this is the build serious truck buyers want.
DURAMAX POWER & TRUE HD CAPABILITY
The 6.6L Duramax is built to tow heavy and pull hard. Equipped with the Gooseneck/5th Wheel Prep Package, integrated trailer camera provisions, Trailer Side Blind Zone Alert, Trailer Tire Pressure Monitor Sensors, and a 2-speed active transfer case, this Sierra is ready for large campers, equipment trailers, and commercial loads across Central Pennsylvania and beyond.
The X31 Off-Road Package adds enhanced off-road hardware for buyers who want capability beyond pavement.
HD Surround Vision, Bed View Camera with trailer camera provisions, and the Inside Rearview Auto-Dimming Rear Camera Mirror make maneuvering and hitching far easier in tight spaces.
DENALI ULTIMATE INTERIOR FULL GRAIN LUXURY
Inside, this truck is on another level. Alpine Umber full grain leather seat trim, heated and ventilated front seats, heated second-row outboard seats, multicolor 15-inch Head-Up Display, and premium materials throughout create a cabin that feels more executive than work truck.
The Bose Premium Series 12-speaker sound system delivers rich audio, while wireless charging and wireless phone projection keep everything connected.
TECHNOLOGY PACKAGE & ADVANCED SAFETY
The Technology Package adds cutting-edge visibility and driver assistance features. Rear Cross Traffic Alert, Safety Alert Seat, Ultrasonic Front and Rear Park Assist, rain-sensing wipers, and full trailering software integration bring modern confidence to heavy-duty performance.
LED smoked amber roof marker lamps and the signature Denali Ultimate grille in Vader Chrome give this truck a bold, unmistakable presence.
WORK-READY DETAILS
Spray-on pickup bedliner with GMC logo, LED cargo area lighting, 120-volt bed and instrument panel power outlets, rear wheelhouse liners, and remote vehicle starter system make this truck functional for real-world use.
WHY THIS SIERRA 2500HD DENALI ULTIMATE
A 2025 GMC Sierra 2500HD Denali Ultimate 4WD with the Duramax diesel is one of the most sought-after heavy-duty luxury trucks on the market. It delivers commercial-grade towing strength with high-end refinement and advanced trailering technology.
Duramax torque. Denali Ultimate luxury. Built to pull anything.
Available now at Mark Martin Motors in Lancaster, Pennsylvania, serving heavy-duty truck buyers across Central PA and the Mid-Atlantic region.
NO HAGGLE PRICING - 106 POINT CERTIFIED INSPECTION FINANCING AVAILABLE NATIONWIDE - WE WELCOME YOUR TRADES NO PRICING GAMES WITH HIDDEN FEES! CALL US FOR YOUR OUT THE DOOR PRICE. Call Us Today @ 717-664-2222! We are located in Lancaster PA near Harrisburg and Philadelphia. Disclaimer: We do our best to make sure this information is accurate; however, we are not responsible for any errors or omissions contained on these pages. Please verify any information in question with Mark Martin Motors.