"I have had 5 Grand Cherokees and I would put them up against any of the Japanese so called American transplant vehicles. "
Jeep Grand Cherokee made the "Worst of the Worst" list of cars in the April 09Consumer Reports based upon much worse than average reliability among 1999-2008 models. But what do they know.
And here is a link to an article about Buick sales in China. It's an older article but Buick sells quite well in China. The article also states GM sells more cars overseas than it does in the US.
http://www.msnbc.msn.com/id/12801549/