2024 GMC Sierra 3500HD 4WD Crew Cab 172 Denali Ultimate - Preferred Equipment Group 5SB, Technology Package - Duramax 6.6L V-8 diesel direct injection, intercooled turbo with 470 HP, Allison 10-speed automatic. This Denali Ultimate combines commercial-grade diesel power and towing capability with a refined, tech-forward cabin and the efficiency advantages diesel engines bring to heavy-duty work.Preferred Equipment Group 5SB sharpens the Sierra's work-ready character by improving ride control and on-road composure, helping you stay confident whether you're towing heavy loads or navigating rough surfaces.Technology Package brings smarter in-cabin systems and refined electronic support to reduce daily stress behind the wheel and keep key controls intuitive on long hauls or jobsite runs.Wireless Apple CarPlay and Android Auto let you access navigation, calls and entertainment hands-free and without cords, keeping your focus on the road while staying connected.Forward collision mitigation continuously monitors traffic ahead and can step in to help lessen or avoid frontal impacts, adding a proactive layer of safety in congested driving.Front pedestrian impact prevention adds extra vigilance in urban and crowded environments by identifying people ahead and taking action to help avert collisions.An integrated mobile hotspot provides reliable internet access for passengers and devices on the move so navigation, streaming and remote work stay uninterrupted without using phone data.The rear camera gives a clear, real-time view of what's behind the truck, simplifying parking, trailer hookups and tight backing maneuvers for greater convenience and safety.Adaptive cruise control automatically manages speed and following distance to reduce fatigue and make highway driving more relaxed and predictable.The head-up display projects essential driving information into your line of sight, so you can monitor speed and alerts without taking your eyes off the road.Predictive brake assist anticipates rapidly closing distances and prepares the brakes for quicker response, helping improve stopping performance when it matters most.Steering wheel-mounted cruise controls put speed adjustments within easy reach, simplifying long-distance driving and helping conserve driver energy.Ventilated front seats deliver targeted cooling so occupants reach comfort faster in hot weather, improving comfort on long workdays or summer trips.Altogether, the 2024 GMC Sierra 3500HD Denali Ultimate is engineered for buyers who demand heavy-duty diesel capability and towing confidence while valuing a quieter, better-equipped cabin full of modern safety and connectivity that make long days easier.Get the largest and best selection renewed just for you! Nearly all makes, all models, all Colorado ready! Since we',re local, so are our vehicles! Our ro