GE and GM are both globalized companies in the US, two separate corporate entities, and there is no relationship between the two. It is not a parent-subsidiary company.
GM GM is a business almost entirely related to automobiles.
General Electric GE business covers many fields, from consumer appliances to aircraft engines, to health care business, to the financial industry, everything. Recently, it is in the process of acquiring shares of SZD and becoming the second shareholder of SZD.
General Dynamics GDC is the largest military ordering contractor in the United States, mainly responsible for the arms side.
Shanghai General Motors is subordinate to Shanghai Automotive Industry Group (SAIG), which introduced the Buick sedan of American General Motors into Shanghai General Motors for production, so the two sides belong to a joint venture. GM is the abbreviation of American GM, GM's cars and trucks brands include:
Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Opel, Pontiac, Saab, Saturn and Volvo. In some countries, GM's sales network also sells automotive products made by GM Daewoo, Isuzu, Fuji (Speedwave) and Suzuki.
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General Motors (China) Investment Co.
General Motors (China) Investment Co. Ltd. is a wholly-owned enterprise established by General Motors Corporation in Shanghai. It has all of GM's local employees in China and is also an investor in GM's joint ventures in China.
Shanghai General Motors Co., Ltd
Shanghai General Motors Co., Ltd. is a leading passenger car manufacturing joint venture in China established by General Motors China and Shanghai Automotive Industry (Group) Corporation***. It is 50% owned by General Motors China. Founded in June 1997, SGM has an extensive sales, after-sales service and parts supply network; imports, produces and sells products under the Buick, Cadillac and Chevrolet brands.
Following the manufacturing bases in Shanghai, Yantai (Shandong Province), and Shenyang (Liaoning Province), SGM started construction of its fourth domestic manufacturing base in Wuhan (Hubei Province), and in 2012, SGM's domestic sales*** totaled 1,331,022 units, a new record high.
Baidu Encyclopedia - General Motors Corporation