The GMC Sierra 3500 HD has long been a top choice for hardworking truck buyers in Cadillac, MI who need maximum capability. For the 2025 model year, GMC has made some exciting updates to this heavy-duty workhorse. Here's a look at what's new and how the 2025 Sierra 3500 HD compares to the 2024 model.
New Standard and Available Features
After a full redesign in 2024, GMC made mostly minor changes to the Sierra 3500 for 2025. A trailer brake controller is now standard in all trims for safer towing. Big Rapids drivers will appreciate that adaptive cruise control with trailering assist is now available in more models, including the AT4 and Denali grades. For added safety, front and rear park assist can now be added to the entry-level Pro and SLE trims as part of the Pro Safety Plus package.
Powerful Engine Options Carry Over
GMC has carried over the powertrain lineup from the 2024 Sierra 3500 HD to the 2025 model, so you'll still have all the muscle you need for passing on the highways around Clare, MI. The standard engine remains a 6.6-liter V8 gas engine putting out 401 horsepower and 464 pound-feet of torque. Also available is the muscular 6.6-liter V8 Duramax turbodiesel that generates 470 horsepower and a whopping 975 pound-feet of torque. Both engines are mated to a 10-speed Allison automatic transmission for smooth power delivery.
When properly equipped, the 2025 Sierra 3500 HD can tow up to 36,000 pounds. That's more than enough capacity for towing heavy equipment around job sites in Big Rapids or hauling a large RV up north for a weekend getaway in Houghton Lake.
Denali Ultimate Trim Adds Luxury
For those who desire more refinement, the GMC Sierra 3500 HD Denali Ultimate trim returns for 2025. This model has full-grain leather upholstery, 16-way power massaging front seats, open-pore wood trim, and a standard MultiPro tailgate. Technology highlights of the Denali Ultimate include a 15-inch diagonal head-up display and a digital rearview mirror.
To learn more about the impressive features and capabilities of the 2025 GMC Sierra 3500 HD, contact Baker Buick GMC of Cadillac or visit our dealership in Cadillac, MI to take your favorite model for a test drive.