The 2025 GMC Sierra HD lineup at Sun GMC in Wantagh, NY, offers exceptionally capable and comfortable trucks ready to tackle tough jobs. With multiple trim options and impressive towing capacity, these trucks deliver heavy-duty performance.
The Sierra 2500 HD
This is the bigger, brawnier brother of the Sierra 1500. It tows more, hauls more, and is built with a stronger frame. It also has all the great features that GMC trucks are known for. The Pro, SLE, and SLT trims come with a powerful 6.6L V8 engine that puts out 401 horsepower and 464 lb-ft of torque. That is paired with a reliable Allison 10-speed transmission ready to take on tough tasks. A 470-hp 6.6L Duramax Turbo Diesel that produces 975 lb-ft of torque is available on all trims.
The 2500 has a standard GVWR of 10,150 pounds or higher, depending on which model you choose. With a curb weight right around 6,500 pounds, you’re looking at around 3,500 pounds of payload capacity. Each one comes with an integrated trailer brake controller, so you also leave the lot ready to hook up your trailer and go.
The Sierra 3500 HD
GMC made the 3500 HD ready for almost anything you might want to throw at a pickup. It features a fully boxed frame that can handle demanding tasks. Equipped with the same engine and transmission combination as the 2500 HD, this truck has a standard GVWR of 11,550 pounds, giving it a standard payload capacity of just over 4,500 pounds. You’ll get a little over 11 inches of ground clearance in this version, making it great over rough and uneven terrain.
2025 Sierra HD Features
GMC ensures you can have a capable truck with great comfort and convenience features. Starting with the XLT trim, every Sierra HD has a MultiPro tailgate, an in-vehicle trailering app, and a premium 13.4-inch infotainment system with Google built-in. They also come equipped with OnStar Basic for added security. Sierra HD Pro Safety is standard on every Sierra HD, which includes:
- Lane keep assist
- Automatic emergency braking
- Collision alert
- IntelliBeam headlights
The MultiPro Tailgate
The GMC MultiPro tailgate gives drivers six functions that make loading and unloading the cargo box easier. It serves as a handy work surface when opened, and an integrated step provides easy access for you to get in and out of the bed. Its smaller, secondary tailgate allows you to safely load extended items without leaving the full tailgate open.
Whether you are shopping for a Sierra Pro to tackle tough jobs or you want a luxurious Denali Ultimate for hauling heavy-duty toys, the GMC Sierra HD trucks fit the bill. Contact Sun GMC in Wantagh, NY, to schedule a test drive.
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