2025 GMC Sierra HD 2500 and 3500 Trucks New Update & Photos

2025 GMC Sierra HD 2500 and 3500 Trucks New Update & Photos. The 2025 GMC Sierra HD lineup is the shadow of more popular nameplates– Ford F-Series, Ram 2500/3500, and its twin Chevy Silverado Series 2 and 3. The Sierra lineup is as capable as all these models and it will get the job done. Updated last season, it is stylish and attractive. The company also revisited the engine lineup, so the new 6.6-liter petrol unit joined the party. It is not as capable as the Duramax turbodiesel V8 powerplant.

2025 GMC Sierra HD 2500 Concept

Well, this is not the only choice buyers of the 2025 GMC Sierra HD will have to make. There are two configurations– Sierra 2500 and 3500. Also, you will have to choose between cab configurations, bed sizes, and trim levels. Heavy-duty trucks, like all other GMC vehicles, will offer the Denali package as the premium version. There, we find some of the most advanced features an HD truck can get. Even the entry-level trucks come with cool equipment.

2025 GMC Sierra HD Diesel

There is a new gasoline engine in the lineup, but the highlight of the model is a turbodiesel engine with 910 lb-ft of torque. Well, General Motors could boost the powerplant, since Ford is already above 1,000. With 445 hp, the outputs are creating enough power for the 2025 GMC Sierra HD to reach a towing capacity of 35,500 pounds. Nevertheless, this will need other upgrades, such as a towing package, and a gooseneck system. Dual-rear-wheel configuration is also required. It is available only for the Sierra 3500 model, leaving Series 2 truck at 18,000 pounds of standard GVWR.

2025 GMC Sierra HD 2500 Concept

New Petrol Engine

Under the hood of the base setup is now a 6.6-liter V8 gasoline powerplant. A 6.6-liter engine is replacing a 6.0 unit. Now, truckers can count on 400 hp and 465 lb-ft of torque, which is a huge boost from 360 horsepower and 380 pound-feet. A six-speed transmission is still there as the only option. For the turbodiesel, a power router is the Allison gearbox. Rear-wheel drive is standard and four-wheel drive optional. Dually setup is not available in combination with the new gasoline engine. GM made this move to improve the efficiency of its heavy-duty trucks. The fresh powertrain will also draw the attention of more buyers.

2025 GMC Sierra HD Denali

Both Sierra 2500 and 3500 will offer the same trim levels. The entry-level package can be upgraded with the SLE or SLT features. The most impressive equipment is coming with two top trim levels. You can choose between utility and luxury. The 2025 GMC Sierra HD AT4 comes with the special options for an off-road drive. Unique shocks and suspensions system will maximize comfort in extreme road conditions.

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2025 GMC Sierra HD 2500 Pictures

Still, the Sierra Denali is top of the line trim. It is offering luxurious features inside the cabin. Premium audio, leather upholstery, and navigation are standard. Also, outside, you will find the latest Multi-Pro six-way tailgate. Finally, we expect the company to include the trailer camera as the standard feature for some lower-level packages. The price is not cheap. With the petrol engine, the 2025 GMC Sierra HD Denali will cost $66,000.

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