Ok...I finally figured out that there is a little solenoid in there that is keeping me from getting my keys out of the ignition.
Well, apparently this is something the genious at GM either knew about or planned for because the plastic cover had a boss/provision for a push button molded into it.
So do they actually make the pin or whatever goes in that hole that can be pushed to release the key? Right now I have a bolt with a vacum plug on it and it seems to work....but if there is a proper part out there, I'd use it.
Of course, if someone could tell me what size that little bolt is that holds the solenoid in I'd just remove it.