The 2025 GMC Sierra 2500HD is a powerful pickup truck that offers incredible performance, durable exterior features, and high-tech interior functions. Explore the new Sierra 2500 and some of its best features in this guide.
Introducing the 2025 GMC Sierra 2500HD: Heavy-Duty Excellence
Engine Options
The standard engine on the Sierra 2500HD is a 6.6L V8 gas engine that yields 401 horsepower at 5200 rpm and 464 lb.-ft. of torque at 4000 rpm. This engine works alongside an Allison 10-speed automatic transmission that provides smooth shifting.
The available 6.6L Duramax Turbo-Diesel engine offers increased power and stamina, with a maximum towing capacity of 21,870 pounds. This engine generates 470 horsepower at 2800 rpm and 975 lb.-ft. of torque at 1600 rpm.
Exterior Features
The Sierra 2500 is a popular pickup choice among drivers with tough jobs because it has durable exterior features that make it a perfect work truck. This includes, but is not limited to, the following:
- CornerStep rear bumper
- Cab-mounted cargo area lamps
- Twelve fixed cargo tie-downs
- Outside vertical trailering mirrors
- Manual locking tailgate
- Side bed step
- All-season blackwall tires
The GMC Sierra 2500 also comes with a trailering package that provides everything you need for efficient towing. This includes a trailer hitch, a 7-wire electrical harness, a hitch platform, a 2.5-inch receiver hitch, and 4-pin and 7-pin connectors.
Seating Configuration
The Sierra 2500 has seating for six passengers, with a 40/20/40 split front bench and a 60/40 split rear bench. Lift the seat bottoms on the front bench to reveal a small cargo area for work tools and other essentials or fold up the rear seat bottoms to create more storage space.
Tech and Connectivity
The 2025 Sierra 2500 has a 7-inch GMC Infotainment system that includes Apple CarPlay, Android Auto, Bluetooth audio streaming, AM/FM stereo, and SiriusXM satellite radio compatibility. Apple CarPlay and Android Auto use Bluetooth technology to connect a compatible smartphone to the truck for an individualized experience. With a subscription, you can use SiriusXM satellite radio to enjoy dozens of music stations, live sporting events, and news reports from around the globe.
The new Sierra 2500 is also Wi-Fi hotspot capable. Your truck can act as a mobile hotspot, offering internet connection on up to ten devices. This hotspot works within fifty feet of the Sierra, allowing you to use your devices while outdoors.
Collision-Avoidance
The new 2500HD comes with the exclusive Sierra HD Pro Safety package, a collision-avoidance system that uses assistive functions to reduce your risk of accidents. Sierra HD Pro Safety includes Lane Departure Warning, Forward Collision Alert, Automatic Emergency Braking, and more. Using radar sensors and digital cameras, the Sierra HD Pro Safety system monitors your surroundings and alerts you to potential hazards before an accident occurs.
Call Peppers Chevrolet GMC in Paris, TN, to learn more about the 2025 Sierra 2500.


