General Motors General Motors General Motors Company, commonly referred to as General Motors (GM), is an American multinational corporation headquartered in Detroit that designs, manufactures, markets, and distributes vehicles and vehicle parts, and sells financial services, with global headquarters in Detroit's Renaissance Center. It was originally founded by William C. Durant on September 16, 1908 as a holding company. The company is the largest American automobile manufacturer, and one of the world's largest. As of 2018, General Motors is ranked #10 on the Fortune 500 rankings of the largest United States corporations by total revenue. General Motors manufactures vehicles in 37 countries;
General Motors Diesel Division General Motors Diesel Division General Motors Diesel Division (GMDD) was a marketing and customer service unit of General Motors founded in 1938. It sought customers for GM's diesel engines, which had undergone major development during the 1930s. It was most active in association with GM's Detroit Diesel Engine Division, which produced lines of lightweight diesel engines that could be adapted to many uses including road vehicles, small boats, military equipment, construction and farm equipment, pumping, and auxiliary power generation. In 1939, Detroit Diesel Series 71 engines were installed in buses produced by Yellow Coach, who would be acquired by GM