
The 2025 GMC Sierra 3500 HD is a heavy-duty pickup truck with space, muscle, and amenities aplenty. Drivers love it for its sturdy and smooth powertrains, superior tech features, and impressive towing capabilities.
Heavy-Duty Capability: The 2025 GMC Sierra 3500 HD
1. Exterior Aesthetics
Bolder and more rugged than its predecessors, the exterior of the GMC Sierra 3500 HD makes a statement both on and off the road. Its fully boxed steel frame and hydroformed front section enable it to withstand the stresses of off-roading, towing, and hauling heavy loads. It is available in regular, double, and crew cab configurations, with different bed lengths and seating for three or six passengers.
The side bed step and CornerStep rear bumper, which feature textured step pads, help provide secure footing. Other exterior features include tailgate and bed rail protection caps, LED daytime running lamps, cargo tie-downs, and all-terrain tires.
2. Performance and Versatility
Serious chores need serious power, and the new Sierra 3500 HD delivers it in spades. Base trims are powered by a 6.6-liter 8-cylinder gas engine that produces 401 horsepower and 464 lb-ft of torque, paired with an Allison ten-speed automatic transmission. A Duramax turbo-diesel 6.6-liter V-8 that churns out 470 horsepower and 975 lb-ft of torque is also available.
To enhance performance further, you’ll find standard features like 4-wheel antilock disc brakes, automatic locking rear differential, electronic shift two-speed transfer case with push button controls, and StabiliTrak. Tow with confidence, thanks to the Trailering Package, which includes a trailer hitch, hitch guidance, and a trailer hitch platform.
3. Comfort
The Sierra 3500 HD proves that power and luxury can coexist. Standard interior features include rear air vents, single-zone manual climate control, a four-way manual driver seat, and a 60/40 split-fold rear bench seat. Stay connected, informed, and entertained on the go with the Sierra 3500 HD’s intuitive infotainment system, Apple CarPlay and Android Auto integration, as well as Wi-Fi hotspot capability.
4. Safety
Every 2025 Sierra 3500 HD comes equipped with a rear seat belt indicator, tire pressure monitoring system, rear seat reminder, and six airbags. Front pedestrian braking, auto emergency braking, forward collision warning, and lane departure alert all work hard to help prevent collisions.
OnStar Basics boosts your confidence on the road, offering remote vehicle controls, voice assistance, auto crash response, live traffic information, and navigation. The HD rear vision camera displays high-quality images of the area behind your truck while in reverse.
The 2025 Sierra 3500 HD is ready to elevate your daily drives and weekend adventures. It comes standard with the Suspension Package, designed to help maintain handling and ride quality no matter where the road takes you. Stop by Bacon Auto Ranch in Athens, TX, today to find a vehicle that suits your budget and needs.

