Fresh from pushing Chrysler into bankruptcy, President Obama and his economic team are hoping that the hard line they took last week gives them leverage to force huge changes in General Motors, a far larger and more complex company.
Officials say that, difficult as Mr. Obama's decision was on Wednesday to take all the risks of a Chrysler bankruptcy, the politics of reshaping G.M. will be far harder. Already a shadow of the company that once dominated the American landscape, G.M. will be forced to eliminate tens of thousands of additional jobs and close factories and dealerships nationwide.
In Chrysler's case, the tough job-cutting decisions had already been made and the government is taking only a small stake. An alliance with Fiat envisions selling the company's cars in new markets around the world and adding cars that use Fiat's fuel-efficient technology.
But in G.M.'s case, Mr. Obama will be forcing deeper cuts and becoming the controlling shareholder. He will also be overseeing the radical downsizing of G.M.'s work force as he is trying to reverse rising unemployment.
"G.M. is very different than Chrysler," Rahm Emanuel, Mr. Obama's chief of staff, said Friday. "But I suppose the one lesson for G.M., and all the other players, is that this is a moment when a Democratic president said, 'I am really willing to let a company dissolve, and there's not going to be an open checkbook.' There's got to be real viability."
No one thinks Mr. Obama is going to allow G.M. to be broken up, its assets sold or abandoned.
But if the Chrysler legal process unfolds as the White House hopes it will in coming weeks, the bankruptcy option may look increasingly attractive for G.M. as well, officials on Mr. Obama's automotive task force said. Bankruptcy may also be the only way to force the kind of paring down that Chrysler, with a third of G.M.'s workers and half the number of plants, did not have to endure.








