GM says the factory will continue to make transmissions for internal combustion vehicles, along with electric drive units. Eventually the plant will make only EV components, but when that happens depends on sales.
Renovation work on the plant will begin this month.
Electric drive units take power from the batteries and convert it to motion at the wheels, GM said.
The 2.8 million-square-foot Toledo plant, built in 1956, will make drive units for future electric trucks including the Chevrolet Silverado and GMC Sierra pickups, along with GMC Hummer EVs.
GM CEO Mary Barra has pledged to unseat Tesla as the top seller of EVs by the middle of this decade.