I have never owned a foreign make automobile, and have driven mostly Chrysler products my entire life, but I can comment on what I observe with this newgroup when it comes to GM cars.
It seems that there are many repeatable design flaws that show up on the usenet like crazy with GM cars. To be specific, Impalas seem to have consistent ISS issues, water leaks, funky BCMs, engine cradle squeeks and pops, and plastic intake manifold failures/leaks. This is not caused by assembly line workmanship (ie unions), but rather poor design engineering management. YES, all cars have design flaws, including the Japanese, but the GM of yesteryear would not have allowed this kind of car in the public domain. This is why they must learn to live with shrinking market share.
My first GM car is a 2001 Impala LS. For the money, it has been very satisfactory, but I still am disappointed that many design flaws are reminding me that there are better cars available.
With my Chrysler car experience, I accepted the fact that they were much cheaper cars then the competitation, therefore, I understood a lower reliability rating. With the year old poor resale of a Chrysler product, you can get a very nice car for the price of a KIA, and even with the reduced relibily, they are good cars for the money.
IF GM wanted to improve, they could, but they won't. American management style will not allow the changes required to compete in a global market. Therefore, GM is shrinking, and learning to be profitable with less market share, which keeps management and Wall Street happy, and that is all that matters.
Have a nice Thanksgiving.