It could be so great, but it definitely is not. Horrible Management.
Pros
Pay and benefits like gas allowance and zero premium for healthcare are pretty nice, on the high end for the area. Although a huge company, the Ann Arbor building is like a smaller family community. The potential is there for cool R&D projects.
Cons
You would think most of the complaints would be about the Korean culture and management, however I found that it is mostly the incompetent US management that is the most frustrating. Most of the better ones have quit. On a whole, it it is like death by 1000 cuts, it is not one thing that gets you but many little things. For the most part if you are an engineer you will be asked to make powerpoint presentations, then rewrite them ten times and add lots of pictures. Rinse and repeat dozens of times a year. Then you may be asked to send it or present it to Korea where most likely it will go into a black hole. Almost zero US projects ever make it into a car. Another common activity is benchmarking at autoshows and so forth. This can be interesting, depends on the person. The US management keeps promising more design work but for the most part Korea does not trust this office and you will mostly release changes that Korea has already made. Also frustrating is any time a Korean VIP is visiting, everything must be cleaned and painted (they will paint the same wall 10 times a year) and you basically can't conduct actual work. I've seen this other places, but not to this extent. I was told to bring up random 3-D models and rotate them for hours as if I was working on it several times by the US management. Bottom line, if you want decent pay and don't mind jumping through hoops and can put up with the ridiculousness, not a bad place. If you want to feel like you accomplished something at work, don't work here.