Open Today Sales: 9 AM-8 PM
If you’re looking to upgrade to a GMC Sierra HD truck that will handle your toughest jobs, the Nimnicht Buick GMC team can’t wait to introduce you to this rugged, heavy-duty lineup. Read on to learn more, then visit our dealership in Jacksonville, FL, to test-drive one or more truck models.
You want a heavy-duty work truck that can tow plenty, handle large payloads, and provide the power you need to get any job done right, and that’s what heavy-duty GMC trucks are all about. The GMC Sierra 2500 HD and GMC Sierra 3500 HD models are two of the most popular work trucks in the country for good reason.
Sierra HD trucks are quite customizable, with options that are available with two-wheel or four-wheel drive. The GMC Sierra 3500 HD for sale offers both drivetrains with dual rear wheels also available. There are three cab options for a GMC Sierra HD model: Regular, Crew, and Double Cab. On top of that, you can choose between a standard or long bed. Once you select your configuration, you can look at the relevant trim options to further tailor the truck to your needs and preferences.
Two engines are available: the gas-powered 6.6-liter V-8 and the Duramax 6.6-liter turbo-diesel V-8. The standard 6.6-liter V-8 gas engine yields 401 horsepower and 464 pound-feet of torque. That’s plenty of might, but the Duramax engine that’s available as an upgrade is the hardest-working choice, thanks to its 470 horsepower and 975 pound-feet of torque. Both powertrains are equipped with an Allison 10-speed automatic transmission.
If these powerful GMC Sierra HD options are a bit more than you need, we encourage you to look at the new GMC Sierra 1500 for sale. This model packs a lot of strength into a smaller, less extreme package.
The GMC Sierra 2500 HD has seven trims to choose from, plus the previously mentioned cab styles, bed configurations, and drivetrains. The available trim selections are Pro, SLE, SLT, AT4, Denali, AT4X, and Denali Ultimate.
The maximum towing capacity of the GMC Sierra 2500 HD for sale is found on models with the Regular Cab. However, those who’d prefer a heavy-duty truck that has room for more passengers will be delighted to know that the 2025 GMC Sierra 2500 HD with a Crew Cab configuration can still reach a maximum towing capacity of 21,870 pounds.1
The GMC Sierra 3500 HD for sale is the most powerful truck in the GMC Sierra HD lineup. It has a maximum towing capacity of 36,000 pounds.1 When you need to handle major jobs in the Jacksonville, FL, area, the GMC Sierra 3500 HD is what you want.
If you have particular business needs, consider the GMC Sierra 3500 HD Chassis Cab. This commercial version of the truck allows for a wide range of upfit choices, such as a Dump Bed, a Flatbed, and an Ambulance/Rescue Body, that can serve many industries. Our team can walk you through your options for the Chassis Cab model.
It’s no secret that GMC Sierra 3500 HD truck models are built to work as hard as you do. Don’t let this opportunity to upgrade your work truck pass you by.
The friendly customer service professionals at Nimnicht Buick GMC look forward to introducing you to these impressive models. You deserve a work truck as dependable as you are, so we proudly offer GMC Sierra 2500 HD and GMC Sierra 3500 HD models to the valued community in Jacksonville, FL. We have a wide selection of new GMC commercial trucks and vans for you to choose from as well.
There are two engine options for GMC Sierra HD trucks: a 6.6-liter V-8 and a 6.6-liter V-8 Duramax Turbo-Diesel engine. The gasoline-powered engine delivers 401 horsepower and 464 pound-feet of torque. The diesel 6.6-liter V-8 engine boasts 470 horsepower, 975 pound-feet of torque, and a max towing capacity of 36,000 pounds.1
There are three different cab configurations to choose from on the GMC Sierra HD models. Options include a Regular Cab, Crew Cab, and Double Cab. There are two options for the bed as well: standard and long. Your specific cab and bed configurations will impact your trim selection, so be sure to chat with one of our associates about which combination is right for you.
The current models for sale are the 2025 GMC Sierra 2500 HD and the 2025 GMC Sierra 3500 HD. The Sierra 3500 HD is the larger truck, so it can handle heavier payloads and tow more. If you want a truck that can manage nearly every task you throw at it, choose the GMC Sierra 3500 HD, which is also available as a Chassis Cab with many upfit possibilities.
1GM-estimated. Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.