GM to Invest $920 Million to Expand Duramax Diesel Plant in Ohio

GM plans to expand production of future internal combustion engine (ICE) heavy-duty truck powertrain products with a $920 million investment in its Duramax (DMAX) Brookville (Ohio) facility.

The 1.1 million-square-foot expansion will more than quadruple the current size of the plant. The investment will also add new technology and equipment.

The investment will bolster the company’s full-size truck businesses and provide jobs. The hourly workers of the Brookville facility are represented by the International Union of Electrical Workers-Communications Workers of America (IUE-CWA) Local 755.

“This historic investment and expansion announcement is a testament to the work ethic of the IUE-CWA members at this company and I could not be prouder," said IUE-CWA International President Carl Kennebrew, .

This announcement marks the third investment in Ohio manufacturing operations from GM in the last 10 months, including $55 million to support the production of V-8 engine block castings and future EV strategies in Defiance, Ohio.