The Wall Street Journal is reporting that the private equity firm Cerberus has won the bidding for Chrysler. DaimlerChrysler (NYSE: DCX), which will probably change its name, will hold a small stake in the new holding company. Cerberus bought the majority of GMAC from General Motors (NYSE: GM) last year.

Aside from what Cerberus pays for the U.S. car company, which may be very little, the key to the transaction will be that Daimler will move the $18 billion of Chrysler pension and benefits obligations off of its books.

The UAW is bound to try to derail the deal. They favor having Daimler keep Chrysler or sell it to Canadian car parts company Magna International (NYSE: MGA). In either case, the union believed it could hold on to more jobs. The UAW may now be faced with trying to block the deal at the Daimler supervisory board level, or threaten to strike in the face of the deal. A work stoppage could badly damage Chrysler's already troubled efforts to turn around it sinking U.S. sales.

Cerberus may have the money, but the union holds most of the cards.

Douglas A. McIntyre is a partner at 24/7 Wall St.