DETROIT  General Motors said on Wednesday that it would shut down Hummer, the brand of big sport utility vehicles that became synonymous with the term gas guzzler, after a deal to sell it to a Chinese manufacturer fell apart.

The buyer, Sichuan Tengzhong Heavy Industrial Machines, said in a statement that it had withdrawn its bid because it was unable to receive approval from the Chinese government, which was trying to put a new emphasis on limiting China’s dependence on imported oil and protecting the environment.

Tight financial markets also hurt the deal. When the commerce ministry did not bless the transaction, the well-capitalized Chinese banks became reluctant to lend money to Tengzhong, even though it tried to set up an overseas subsidiary to buy Hummer. That left Tengzhong trying to borrow money from Western banks that have been curtailing their lending even to established borrowers, much less a little-known company from western China.

A spokesman for Hummer, Nick Richards, said G.M. had no specific timetable for completing its wind-down, but left open the possibility that G.M. would be open to new bids.