In 1936 EMC 's new factory started production of switch engines .
GM , seeing the success of the custom streamliners , sought to expand the market for diesel power by producing standardized locomotives under their Electro - Motive Corporation .
In 1936 Electro - Motive Corporation 's new factory started production of switch engines .
GM , seeing the success of the custom streamliners , sought to expand the market for diesel power by producing standardized locomotives under their Electro - Motive Corporation .