The Delco strike prompted GM plant closings.

General Motors said it will close two plants in Detroit today, idling 6,000 workers. It also began cutting thousands of workers’ hours at other plants because of parts shortages stemming from the strike at Delco Electronics’ Kokomo, Ind., facility. If the strike continues, GM’s Van Nuys plant could be closed next week, company officials said. About 7,700 Delco workers represented by the United Auto Workers walked off the job Monday in a dispute over domestic subcontracting and plans to transfer work to Mexico.