When - and are there any major changes ?

 

No major changes that I know of, THere was supposed to be a 2010 1500 with a 4.4liter Duramax option, but that was kabashed in light of recent events.

I am under the impression that they have already been released, I saw a 2010 Camaro yesterday and stopped to look at a new Equinox the other day. Any time. Any time

 

Ya the Camaros have been out for a month or so. Also, just read this morning that GM is offering a no questions asked money back guarantee on '10 cars and trucks for the first 60 days:

http://news.yahoo.com/s/ap/20090911/...ehicle_refunds