In 2009 (that was then)
How Good Are GM and Chrysler Warranties?
President Barack Obama made clear at his press conference on Monday that the U.S. government would stand behind warranties on cars purchased while the automakers restructure. "Let me say this as plainly as I can: If you buy a car from Chrysler or General Motors, you will be able to get your car serviced and repaired just like always," Obama said. "Your warranty will be safe. In fact, it will be safer than it has ever been. Because starting today, the United States will stand behind your warranty."*
In 2011 (this is now)
New GM said not responsible to fix Impala made by old GM
General Motors Co is seeking to dismiss a lawsuit over a suspension problem on more than 400,000 Chevrolet Impalas from the 2007 and 2008 model years, saying it should not be responsible for repairs because the flaw predated its bankruptcy.
As one wag put it: GM has a new gearbox going into all new cars. It's called the obama transmission - It shifts the blame.
* oodles of disclaimer, here. In tiny writing. In nearly the same color as the background.