Heavy-Duty Strength: 2025 GMC Sierra 3500HD

When you need a truck that works as hard as you do, the 2025 GMC Sierra 3500HD rises to the occasion. Whether you're hauling equipment across Wisconsin job sites or towing a fifth-wheel camper for a weekend getaway, this heavy-duty powerhouse delivers top-tier performance, advanced tech, and a bold design. At Kunes Buick GMC of Greenfield, we’re proud to showcase the latest iteration of GMC’s hardest-working truck — now tougher, smarter, and more refined than ever.

At the heart of the 2025 Sierra 3500HD is its unmatched strength and engineering. GMC offers two powerhouse engine options to suit your workload:

• 6.6L V8 Gas Engine: Delivering 401 horsepower and 464 lb-ft of torque, this engine is paired with a 10-speed automatic transmission, providing smoother shifts and better towing performance.
• 6.6L Duramax® Turbo-Diesel V8: This beast churns out a whopping 470 horsepower and 975 lb-ft of torque — ideal for drivers who need maximum towing power and reliability.

With maximum towing capacities exceeding 36,000 pounds when properly equipped, the 2025 Sierra 3500HD doesn't flinch at the sight of heavy loads. Whether you’re towing a livestock trailer, construction equipment, or a large camper, this truck is up to the challenge.

The 2025 Sierra 3500HD isn’t just muscle — it’s style with purpose. GMC refreshed the exterior to include:

• Bold grille designs exclusive to each trim
• High-Intensity LED headlights and signature C-shaped lighting
• New wheel options, including 20-inch machined aluminum wheels on higher trims
• Available MultiPro™ Tailgate, offering six functional positions to simplify loading and unloading

From work sites in Milwaukee to tailgates at Lambeau Field, this truck makes a bold statement wherever it goes.

Step inside the 2025 Sierra 3500HD, and you’ll find a surprisingly upscale cabin. GMC has equipped the interior with premium materials, ample space, and thoughtful tech integrations. Notable updates include:

• New 13.4-inch infotainment display (available on higher trims)
• 12.3-inch digital driver information center
• Wireless Apple CarPlay® and Android Auto™
• Available Bose® premium audio system
• Heated and ventilated front seats with available leather upholstery
• Massive center console storage for tools, tech, and gear

Upper trims like the Denali Ultimate offer luxury features that rival some high-end SUVs, making long hauls and everyday drives more enjoyable than ever.

The 2025 Sierra 3500HD doesn’t just tow — it tows smart. New and enhanced trailering tech includes:

• Up to 14 camera views, including a transparent trailer view and bed view with zoom
• Adaptive Cruise Control with trailering
• Integrated trailer brake controller
• Trailer tire pressure monitoring system
• Smart Trailer Integration via the myGMC mobile app

Whether you're navigating city streets or backing up a fifth-wheel on your farm, the Sierra HD's technology keeps you in control and confident.

Peace of mind comes built-in with a robust suite of safety and driver-assistance features, including:

• Forward Collision Alert
• Lane Departure Warning
• Automatic Emergency Braking
• Front and Rear Park Assist
• Rear Cross Traffic Braking
• Blind Zone Steering Assist with Trailer Coverage

Plus, GMC’s new Super Cruise™ hands-free driving is available on select trims, bringing semi-autonomous driving to the heavy-duty segment — a game-changer for long-distance haulers.

The 2025 Sierra 3500HD is offered in a variety of trims to suit your budget, preferences, and workload:

• Pro – Work-ready and affordable, ideal for fleet use
• SLE – Adds comfort and convenience upgrades
• SLT – A perfect balance of capability and refinement
• AT4 – Off-road optimized with rugged enhancements
• Denali – Luxurious with premium interior finishes
• Denali Ultimate – Top-tier features, best-in-class materials, and advanced technology

No matter which trim you choose, you’ll find exceptional build quality and attention to detail across the board.

At Kunes Buick GMC of Greenfield, we’re more than just your local truck dealer — we’re your partner in performance, reliability, and customer service. Here’s why Greenfield and Milwaukee drivers trust us:

   ✅ Large inventory of Sierra HD trucks in stock and ready to test drive

   ✅ Knowledgeable staff who understand your business and towing needs

   ✅ Easy financing and lease options tailored for personal and commercial buyers

   ✅ Certified GMC service center with HD truck specialists

   ✅ Community-focused dealership with a reputation built on trust

Whether you're a contractor needing fleet vehicles or a family towing a camper to Wisconsin Dells, we're here to get you the right truck — fast.

The 2025 GMC Sierra 3500HD is more than a workhorse — it’s a modern-day marvel that blends brute strength with refined features. Ready to see it in person? Visit Kunes Buick GMC of Greenfield to test drive this heavy-duty legend and discover the difference of shopping local.