I think HogFan is right. I think. I know that NUMMI (in Cali.) where my Pontiac/Toyota Vibe was built for instance was union, but Toyota closed it up in April. Curious, I did some digging on the internet about unions and Japanese car companies and they do seem to be non-union but I am not 100% sure on that... Honda builds cars in Ohio and Indiana, and Toyota builds some in Indiana and I think Subaru too. Not sure about those plants. Probably non-union but I'd need to see better confirmation than what I could come up with.
The reason I got interested is the topic came up one day with some folks I know and nobody really seemed to know the answer for sure so I did a little looking. Couldn't really find a site that definitively listed which offshore companies had unions here. But again, I suspect HogFan is correct.
KT
well I waffled on that Dakota and missed it, but you might be on to something with that Suburban, I've seen a few of those around in pretty good shape for kinda cheap... cheaper than trucks, that's for sure.