well i have been searching all over on how to fix this prob on my steering wheel the center shaft of the steering colum came out and it looks to have a codder key slot at the bottom if it is do i just get a new codder key to fit or what ? any help with this would be very welcome thank you in advance. o and its a 1978 vette

 

Jim Shea is a GM engineer and was involved with the Corvette steering, you can find a lot of information is his papers:
http://jimshea.corvettefaq.com/