GM Investing $491 Million in Marion Metal Center in Indiana to Support EV Production Investment will support future vehicles, including EVs, built at GM assembly plants across the countryBackDETROIT — General Motors announced today it will invest $491 million at its Marion, Indiana metal stamping operations to prepare the facility to produce a variety of steel and aluminum stamped parts for future products, including electric vehicles, built at multiple GM assembly plants. “Indiana is the number one ranked manufacturing production state in America per capita and ranks in the top three for automotive vehicles,” said Indiana Gov. First opened in 1956, GM’s Marion Metal Center produces sheet metal parts for multiple GM assembly plants to support production of Chevrolet, Buick, GMC and Cadillac vehicles. General Motors (NYSE:GM) is a global company focused on advancing an all-electric future that is inclusive and accessible to all. General Motors, its subsidiaries and its joint venture entities sell vehicles under the Chevrolet, Buick, GMC, Cadillac, Baojun and Wuling brands.