The UAW is working on getting concessions from their workers--they have to abide by their constitution in how they work with their union workers. It's not all the UAW--the companies need to make a profit on their cars and they haven't for quite some time.
I was watching some of the proceedings today, and one expert gave the dire prediction that GM would be bankrupt by the end of December if nothing was done. There's also talk about GM and Chrysler merging. I'm not entirely sure how putting 2 failing companies together will create a profitable one, but I don't have their business plans either.