Just got one in.
I just got my first G6 in for locking up in steering. I remembered that the G6 is actually a Chevy Malibu (the new ones) with a Pontiac flair. This one is a 2005, and I spent a little time at a Chevy dealer as a tech and when they got a Malibu in with a steering lockup concern they just replaced the steering column. That is what i am going to do on this one, hope it fixes it, what has been replaced on your cars that did not fix the problem? There is a bulletin out explaining some of the possible concerns that could be normal, but it is kind of long. I will e-mail it to anyone who wants to give it a look, but I think it is too long to post.