I must say I have one of the rarest 2005 G6's out there. It has had some steering "knock" when turning the wheel, but nothing has ever failed. I have never been left stranded because of it, and never had any other issues with anything else either. This car runs great, even though it was part of the first production year.
I did have the front CAT go bad. Rather than spend $800 to replace it, I gutted it myself and used a spark plug defouler to keep the O2 from putting on the CEL light. Spent $4 on that! Will this cause issues when I go to have these 3 recalls fixed? I do not live in a SMOG state, so I think I'll be ok....maybe.