General Motors said that Chevrolet’s all-new 2018 Class 4/5 commercial truck will be powered by a Duramax engine and an Allison transmission.

With an expected launch date in 2018, the truck is being jointly developed by Chevrolet and Navistar, and will tackle myriad jobs such as general contracting and urban delivery, the company said at the 2017 Work Truck Show in Indianapolis on Tuesday.

“Our new Chevrolet medium-duty will be the flagship of our truck portfolio for fleet and commercial customers,” said John Schwegman, director of commercial product and medium duty for GM fleet.

Marshalling the best Duramax diesel and Allison transmission engineers will be a draw for customers, Schwegman said.

Allison Transmission – headquartered in Indianapolis – produces medium and heavy-duty transmissions. Its designs have been used in a variety of applications, including refuse, construction, fire, distribution, bus, motorhomes, defense and energy. Chevrolet has used the company’s transmissions in its trucks for over 60 years.

Duramax diesel engines were first introduced in Chevrolet and GMC trucks in 2001 and have driven more than 100 billion miles. Over time, the engines have been continually refined using technologies such as aluminum cylinder heads, the quick-start system and the Venturi Jet Drive Oil separator.

Together, Allison transmissions and Duramax engines have powered nearly 2 million trucks.

Technical specifications for Chevrolet’s new medium-duty trucks, including cab and frame dimensions, horsepower and torque, gross axle weight rating, gross vehicle weight rating, payload and other ratings will be announced closer to its launch date.

GM and Navistar reached a long-term agreement to develop and build medium-duty Class 4 and 5 commercial vehicles in October 2015.

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