2003 Pontiac Grand Prix key will not go to lock position

U most likely have a bad solenoid on ur sterring column and usuall have to put a whole new steering column in

I had the same problem.The gear that turns the tumbler inside the column is broken.You'll have to take it to a steering column repair shop.If you look on the underside of the column just under the key,you will see a plastic plug.Remove it and get a long skinny screwdriver or a nail and feel around for the release.Once you find it hold it,and turn the key to the lock position,and remove the key.This is a temporary"fix"

I too had the same problem. It was a wire that had broken internally. That wire powers the above mentioned solenoid. My mechanic who is a genius at finding such things said there is a GM bulletin on the subject. Apparently it was a problem on those cars. So, as always do some proper trouble shooting before you start buying parts or dismantling things, or find a competent mechanic who troubleshoots first.

This is a VERY common problem for the Grand Prix. Basically same as Ricardo's reply, but my plug was gone-so it was just a small opening underneath the steering column; we took a long skinning screw and shove it in there and left it.