Introducing the 2025 GMC Sierra HD: Where Performance Meets Style

If you are looking for a pickup truck that can handle anything thrown at it, your search ends with the 2025 GMC Sierra HD. Its heavy-duty towing capabilities let you take on even the toughest jobs, and its bold presence turns heads wherever you go.

Gas and Diesel V8 Options

You can choose between a gas and a diesel V8, depending on the attributes you want your Sierra HD to have. The 6.6L gas V8 generates 401 horsepower and 464 lb-ft of torque and serves as the pickup truck’s base engine. It offers the best fuel economy and max payload ratings between the two options.

If you want uncompromising towing capabilities, the Duramax 6.6L Turbo-Diesel V8 is the right choice. It generates a ground-pounding 470 horsepower and 975 lb-ft of torque and supports a max towing capacity of 21,870 lbs in the Sierra 2500 HD and 36,000 lbs in the Sierra 3500 HD.

Allison Transmission

Both gas and diesel V8 engines come mated to a 10-speed Allison automatic transmission that provides smooth, uninterrupted power delivery. The Allison transmission is popular among tradesmen and pickup truck enthusiasts for making handling heavy loads more convenient. It features a special Tow/Haul mode, which reduces shift cycling, and Auto Grade Braking, which reduces reliance on the friction-based brakes.

Advanced Trailering Technology

The Sierra HD backs up its muscle with a wealth of trailering technologies. Both Sierra 2500 HD and 3500 HD models offer the available ProGrade Trailer System, which includes hitch guidance and an in-vehicle trailering app. The available auxiliary trailer camera provides multiple views of surrounding traffic, and the available trailer tow mirrors help monitor blind spots by showing more of the trailer’s length. The truck also offers trailer side blind zone alert and adaptive cruise control with trailering support.

Spacious Bed

You can fit up to 69.5 cubic feet of cargo in the standard bed of both the Sierra 2500 HD and 3500 HD. Upgrading to the Long Bed configuration increases the cargo volume to a massive 83.5 cubic feet. All Sierra HD models come standard with 12 cargo tie-downs, with each rated at 500 lbs per corner, helping you secure payloads in place.

Bold Styling

The Sierra HD’s rugged styling commands all the attention on the road. The bold front end incorporates a prominent grille and LED projector headlamps with signature lighting sequences. Depending on the trim level, you will see large 20-inch machined aluminum wheels that add to the pickup truck’s muscular look. The Sierra HD also features a high ground clearance, reaching up to 11.22 inches in non-off-road trims, helping it tower over other vehicles on the road.

Take the monstrously powerful GMC Sierra HD to dominate your next towing job. Contact us at Princeton Chevrolet GMC in Princeton, IL to learn more about the various configurations of this heavy-duty pickup truck.

Tags: 2025 GMC Sierra 2500 HD, 2025 GMC Sierra 3500 HD, GMC trucks, tow rating
Posted in 2025 Vehicle Lineup, GMC Trucks, Princeton Chevrolet Dealer | No Comments »