As part of a renewed bid for a bailout, GM said it needs an immediate injection of $4 billion to stay afloat until the end of the year, a fact it hadn't before disclosed. In total, the company said it needs $18 billion in loans -- $6 billion more than it said it would need just two weeks ago.

Chrysler's 14-page summary of its presentation to Congress requests $7 billion, and it said it needs the funds by Dec. 31. Chrysler also wants $6 billion from a Department of Energy program aimed at promoting fuel-efficient vehicles.

Ford Motor Co. seeks a $9 billion line of credit from the government, though it adds it may not need to tap it. In addition, Ford wants $5 billion from the Energy Department program.

All three makers said they will consolidate operations and accelerate production of higher-mileage vehicles. In addition, GM and Ford plan to trim their brands.