DETROIT -- General Motors pressed union leaders for concessions on Monday afternoon, a day before the automaker must file a detailed restructuring plan with the Treasury Department, according to The New York Times.

But there were no signs of an impending deal to swiftly cut labor costs and help ensure G.M.'s viability.

Talks with the United Automobile Workers union have also intensified at Chrysler and at the Ford Motor Company, even though Ford is not borrowing money from the government and does not have to show the government that it is cutting costs.

Both G.M. and Chrysler are racing to complete restructuring plans by Tuesday's deadline. The companies are required to show progress in cutting long-term costs as a condition for keeping loans they have received from the federal government.