5 Favorite Features of the 2025 GMC Sierra 3500 HD

Capable Powertrain

A thunderous 6.6L V8 powers the Sierra 3500 HD. It generates up to 401 horsepower and 464 lb-ft of torque, giving drivers plenty of muscle to tow and haul. By default, the engine’s power is sent to the rear wheels, but buyers can opt for an all-wheel drive (AWD) model if they regularly drive beyond the pavement.

Alternatively, the Sierra 3500 HD can be equipped with a 6.6L Duramax Turbo-Diesel V8. It generates 470 horsepower and 975 lb-ft of torque and comes with an engine block heater and an engine after-run feature. Similar to the gas engine, the diesel V8 can be paired with either an RWD or an AWD drivetrain.

Allison Transmission

Another favorite feature of the Sierra 3500 HD is its standard Allison 10-speed automatic transmission. The Allison transmission is popular among tradesmen as well as pickup truck enthusiasts for how convenient it makes towing. It features a special Tow/Haul mode that reduces shift cycling and an automatic engine grade braking system that reduces reliance on friction-based brakes.

Impressive Towing Capacity

When equipped with the 6.6L Duramax Turbo-Diesel V8 and the available Max Trailering Package, the Sierra 3500 HD tows 36,000 lbs. In addition to its remarkable towing capacity, the pickup truck offers an array of trailering technologies. These include up to 14 available camera views of the trailer and surrounding traffic, trailer side blind zone alert, the ProGrade Trailering System, and an in-vehicle trailering app.

Versatile Tailgate Design

The Sierra 3500 HD offers the available MultiPro Tailgate, improving the truck bed’s versatility. Its functions include folding down into a full-width box step that supports 375 lbs, folding into a flat work surface, and folding out a load stop. It can also operate like a regular tailgate, using the key fob to open and close.

Comfortable Cabin

The Sierra 3500 HD feels just as at home transporting families and cruising on the highway as it does towing commercial machinery. Select trims feature power-adjustable front bucket seats with heating and ventilation and rear outboard seats with heating, treating up to six passengers to a comfortable ride. Standard and available in-cabin amenities include dual-zone automatic climate control, wireless phone charging, a 13.4-inch infotainment touchscreen, and a Bose Premium Series 12-speaker audio system.

With the Sierra 3500 HD by your side, no load is too heavy and no journey is too long. Make this heavy-duty pickup truck yours today at Coughlin Chevrolet Buick GMC Newark in Newark, OH.

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