Sierra 3500

Denali Ultimate

Spider

AWD4WD

8-Cylinder Turbo

Diesel

2025 GMC Sierra 3500HD Denali Ultimate Summit White | 6.6L Duramax Diesel | 4WD Crew Cab Top-of-the-Line Luxury Meets Heavy-Duty Performance Now Available Explore the all-new 2025 GMC Sierra 3500HD Denali Ultimate in Summit White, powered by the proven 6.6L Duramax V8 Turbo Diesel engine and backed by a 10-speed Allison automatic transmission. This 4WD crew cab combines extreme towing power with unmatched interior luxury, making it the ultimate heavy-duty truck for work or play. Key Highlights Duramax 6.6L V8 TurboDiesel Engine 10-Speed Allison Automatic Transmission 4WD with 2-Speed Active Transfer Case Denali Ultimate Interior with Alpine Umber Leather X31 Off-Road Package Gooseneck / 5th Wheel Prep Package ProGrade Trailering System Performance &amp; Utility 3.42 Rear Axle Ratio Dual Heavy-Duty 70 Amp-Hr Batteries 220 Amp Alternator High Idle Switch Hitch Guidance with Hitch View Trailer Camera Provisions + Bed View Camera Trailer Side Blind Zone Alert Trailer Tire Pressure Monitor System Snow Plow Prep / Camper Package Spray-On Bedliner with GMC Logo LED Cargo Area Lighting LED Smoked Amber Roof Marker Lamps Rear Wheelhouse Liners Luxury Interior &amp; Comfort Alpine Umber Leather Seating Heated and Ventilated Front Seats Heated Rear Outboard Seats Power Sliding Rear Window with Defogger Rain-Sensing Wipers Power Front Windows (Express Up/Down) Power Sunroof Manual Tilt/Telescoping Steering Column Wireless Charging &amp; Wireless Phone Projection Multicolor 15&quot; Head-Up Display Dual-Zone Automatic Climate Control Safety Alert Seat Universal Home Remote Technology &amp; Infotainment Bose Premium Series 12-Speaker Sound System SiriusXM with 360L Trial Subscription Apple CarPlay &amp; Android Auto In-Vehicle Trailering App HD Surround Vision Camera System Push Button Start + Remote Start 120V Bed &amp; Interior Power Outlets USB Type-A and Type-C Ports (Front &amp; Rear) Technology Package Advanced Safety &amp; Driver Assistance Rear Cross Traffic Alert Ultrasonic Front &amp; Rear Park Assist Safety Alert Driver Seat Trailer Side Blind Zone Alert ProGrade Trailering System Theft-Deterrent System (Unauthorized Entry) Now Available Call for Pricing &amp; Test Drive Call 860-356-4714 Today Ask for Mike! Mike Makes The Deals Test Drives, Trade-In Appraisals, and Financing Options Available Every used vehicle includes a 3-Month / 3,000-Mile Powertrain Warranty Minimum Price includes standard rebates. Additional rebates may be available, please see dealer for details: $1000 - Buick &amp; GMC Select Market Incremental Consumer Cash. Exp. 08/04/2025

New 2025 GMC Sierra 3500 Denali Ultimate

New 2025 GMC Sierra 3500 Denali Ultimate New Britain CT 06051

Gooseneck/5TH Wheel Prep Package

Snow Plow Prep/Camper Package

Finance with Gallagher Buick GMC

Warranty

Credit Report

Good drivers save more

Automatic

Gallagher Buick GMC

St Louis

 for sale in New Britain, CT. Learn more about this vehicle.

New 2025 GMC Sierra 3500 Denali Ultimate for sale in New Britain, CT 06051: Truck Details - 755455506 | Kelley Blue Book