General Motors Corporation has not been publicly traded due to its former liquidation state.
(see related questions)
Target Stores trade on the NY exchange as TGT (Target Corporation).
The symbol for General Motors Company in the NYSE is: GM.
GM
"GM" (same as the old ticker symbol for General Motors)
gmt
Buick is a brand owned by General Motors. General Motors trades under the symbol GM on the New York Stock Exchange.
Hummer is owned by General Motors Corporation, which has the ticker symbol of GM.
The stock symbol is GM, for General Motors, Chevrolet's parent company.
Cadillac is owned by General Motors, which trades on the NYSE under the symbol GM.
Chevrolet is owned by General Motors and trades on the NYSE under the symbol GM.
It has no stock symbol. It is a part of General Motors, so would be included in GM.
GM. All the units of General Motors trade as one entity.
GM