DETROIT  Believe it or not, General Motors has a hit car on its hands.

Amid the gloom of bankruptcy and a miserable market for new vehicles, G.M.’s new Chevrolet Camaro muscle car is winning over consumers looking for a little excitement in a bland landscape of look-alike sedans and watered-down sport utilities.

G.M. sold 9,300 Camaros during the month of June  more than either its entire Buick or Cadillac divisions could muster on their own.

And with G.M. expected to emerge Friday from bankruptcy as a newly constituted company, it is hardly surprising that the Camaro will play a starring role in the company’s coming-out party and news conference at G.M.’s Detroit headquarters.

G.M.’s chief executive, Fritz Henderson, and new chairman, Edward Whitacre, plan to offer the Camaro as proof that a comeback is under way.