General Motors Corporation, founded in 1908 and based in Detroit, Michigan, manufactures a variety of cars and trucks. The company maintains manufacturing facilities in 33 countries. It sells millions of vehicles annually. General Motors is known for its Buick, Cadillac, Chevrolet, GMC, GM Daewoo, Holden, HUMMER, Opel, Pontiac, Saab, Saturn, and Vauxhall automobile and truck lines. The company sells parts and accessories under the GM, GM Performance Parts, GM Goodwrench, and ACDelco brands. It also is known for the GM Powertrain engines and transmissions. The firm's GMAC Financial Services unit provides individuals and businesses with automotive, residential, and commercial loans and insurance. The company's OnStar subsidiary provides consumers with vehicle safety, security, and information services. General Motors holds a majority stake in GM Daewoo Auto & Technology Company, which is based in South Korea. General Motors also has formed technology alliances with Suzuki Motor Corporation, Isuzu Motors Limited, DaimlerChrysler AG, BMW AG, and Toyota Motor Corporation. It has formed manufacturing alliances with Toyota, Suzuki, Shanghai Automotive Industry Corporation, and Renault SA. The United States is General Motors' largest market. The firm serves customers across the Americas, Europe, Asia, Africa, and the Middle East. General Motors is listed on the New York Stock Exchange under the GM symbol.