2021 GMC Sierra HD Changes, Interiors and Styling.After the confirmation of the GMC Sierra light-duty lineup, a heavy-duty lineup should arrive anytime soon as well. For that reason, the 2021 GMC Sierra HD is coming to the markets and we already saw the latest images of this pickup truck. According to the leaked images, the heavy-duty lineup will get numerous changes and upgrades. Perhaps, the biggest change will be a LED lighting system up front. Moreover, LED headlights will be standard. Besides that, Denali trim is coming on the markets as well, as we can see a regular cab of the Denali trim on the spy shots.No doubt, the 2021 Sierra HD will be the best one so far and we can’t wait to see more specific details. There will be three cab sizes and a couple of trim levels, probably four of them. A powerful Duramax diesel engine will be in the offer once again and the interior will look very modern and inviting.
2021 GMC Sierra HD will use more aluminum materials
The upcoming 2021 GMC Sierra HD will follow the same way as the current Sierra 1500 model. That includes large chrome grille up front and a unique set of wheels on the sides. Moreover, the new heavy-duty lineup will utilize more aluminum materials in a combination with the high-strength steel. A MultiPro tailgate will be in the offer, along with the CarbonPro box. However, the biggest change will be the LED lighting system.According to the newest photos, the front end will be equipped with the LED headlights and fog lights. This feature will be standard on all models and the shape of the headlights will remain. The shape and dimensions are intact, and Sierra HD looks a lot like a smaller Sierra 1500. Most of the features are larger and more aggressive, but generally, the rest of the exterior is the same.
2021 GMC Sierra HD interior is similar to the 1500 model
The same thing will continue inside the cabin, where the 2021 GMC Sierra HD will borrow almost everything from its smaller 1500 sibling. That includes the same use of the materials and the same layout of the controls. On the other hand, we must admit we are surprised with such a great level of comfort for such a rugged vehicle.For additional money, you can equip the interior to the luxury level, thanks to the optional features. Plenty of upscale features are available and that includes leather upholstery and latest technology systems. If you opt for Denali models, that level of luxury becomes even higher. Regular cab models are offering room for three while the crew cab can fit up to six passengers.
2021 GMC Sierra HD engine
Under the hood of 2021 GMC Sierra HD will be no changes at all. With that in mind, three powertrains are on the offer as before. All three engines are V8 and the standard one is a 6.0-liter. This unit generates 300 HP and 333 lb-ft of torque. The same engine is optional and the difference is that the optional engine will use gasoline. A gasoline powertrain produces about 30 additional horses and 50 lb-ft of twists.The third and most popular option is a 6.6-liter Duramax V8 turbodiesel. This drivetrain provides plenty of power, up to 445 horsepower and 910 lb-ft of torque.
Towing capacity and transmission
Thanks to those figures, the 2021 Sierra HD can tow almost 24,000 pounds. No matter which engine you choose, a 6-speed automatic transmission will be the only option.
2021 GMC Sierra HD price and release date
The starting price of the 2021 GMC Sierra HD will be around $35,000, or slightly more. Denali models are priced at $58,000. This full-size pickup truck will hit the dealerships in the second half of 2019.