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Robust 6.6L V8 delivers exceptional towing and hauling for tough jobs.
Denali Luxury Cabin
Premium leather, real wood trim, and advanced comfort for first-class journeys.
Advanced Trailering Tech
ProGrade Trailering system offers enhanced camera views and easy hitching.
Comprehensive Safety Suite
Includes lane departure warning, forward collision alert, and more smart protections.
The key features listed may depend on the trim, options, or equipment package.
2025 GMC Sierra 3500 HD - Description
2025 GMC Sierra 3500HD 4WD Crew Cab Long Box Denali for sale
Performance & Powertrain
>> 6.6L Duramax Turbo-Diesel V8 engine - higher torque and towing ability than standard gas engines.
>> Allison 10-speed automatic transmission (with Duramax) - premium heavy-duty transmission for smoother, stronger towing performance.
>> Max Trailering Package compatibility - advanced cooling and tow-optimized gearing options.
>> Integrated diesel exhaust brake - enhances downhill control while towing heavy loads.
Interior Comfort & Luxury
>> Forge perforated leather seating surfaces - premium upholstery.
>> 12-way heated and ventilated power front seats - more comfort and adjustability.
>> Heated rear outboard seats - added passenger comfort.
>> Power sliding rear window - convenience and airflow enhancement.
>> Adaptive Cruise Control - more advanced than basic cruise control.
Technology & Infotainment
>> Bose premium audio system - richer sound than base audio.
>> 13.4-inch diagonal GMC Premium Infotainment System with Google built-in - large touchscreen with navigation & voice.
>> Wireless Apple CarPlay & Android Auto - seamless device integration.
>> Wireless phone charging - cable-free power for compatible devices.
Advanced Safety & Driver Assistance
>> HD Surround Vision camera system - provides a bird's-eye view for better parking and trailering.
>> Front & rear park assist - sensors to help avoid obstacles.
>> Trailer side blind zone alert - alerts when a trailer blocks visibility.
>> Rear Cross Traffic Alert - improves backing safety in busy areas.
While we strive to ensure that the information on this website is accurate, we recommend contacting us directly to verify details and obtain additional information about the vehicle, including confirmation of prices, colors, trims, options, and other specifications.
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