What sets GMC’s Sierra HD lineup apart from other pickups on the market? From the 6.6L gas engine to the exclusive Sierra HD Pro Safety package, check out the most impressive features of the 2025 GMC Sierra 3500HD.
1. 6.6L V8 Gas Engine
The Sierra 3500 comes with a 6.6L V8 gas engine that boasts a remarkable 401 HP at 5200 rpm and 464 lb.-ft. of torque at 4000 rpm. This engine is paired with an Allison 10-speed automatic transmission.
2. 6.6L Duramax Turbo-Diesel Engine
To help your Sierra 3500 reach its full potential, you can upgrade to the available 6.6L Duramax Turbo-Diesel engine. This engine offers 470 HP at 2800 rpm and 975 lb.-ft. of torque at 1600 rpm. It’s the perfect choice for drivers who need to tow heavy trailers or other vehicles since it provides a maximum towing capacity of 36,000 pounds.
3. Wi-Fi Hotspot Capability
The new GMC Sierra 3500 has Wi-Fi hotspot capability for as many as ten different devices. Pull out your tablet and do some online shopping or use your laptop to finish some work on the road, all thanks to this 5G hotspot that works within fifty feet of the truck.
4. Wireless Smartphone Integration
You can use your smartphone through wireless Apple CarPlay or Android Auto on the Sierra 3500’s 7-inch GMC infotainment system. This system uses Bluetooth technology to pair your phone with the truck, giving you the ability to make hands-free phone calls through natural voice recognition.
5. GMC MultiPro Tailgate
The SLT and all higher 3500 trims have a GMC MultiPro tailgate. This innovative exterior feature enhances your cargo experience by giving you numerous ways to load, unload, and haul items. The MultiPro tailgate can be reconfigured into six possible positions to meet your needs.
6. Trailering Package
Every Sierra 3500 comes with a complete trailering package to accommodate all of your towing projects. This package includes a 2.5-inch receiver hitch, 4-pin and 7-pin connectors, a 7-wire electrical harness, a standard trailer hitch, a 7-pin sealed connector, and a trailering hitch platform. The Hitch Guidance digital feature also comes with your GMC’s trailering package, helping you align your trailer and hitch with precision.
7. Sierra HD Pro Safety
Sierra HD Pro Safety is a collision-avoidance package that uses a combination of functions to help you stay safer behind the wheel. Forward Collision Alert warns you when your truck gets too close to the vehicle ahead of it, while Lane Departure Warning alerts you if the truck unintentionally drifts out of its lane. The Sierra HD Pro Safety package also has IntelliBeam, Following Distance Indicator, and Front Pedestrian Braking.
Stop by Hansen Motor Co. in Brigham City, UT, to experience these Sierra 3500 features in person!
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