To say the key is related to the ignition failure is not really true. GM came up with 84 recalls in 2014, many of which were similar, that is how many different cases are listed with the National Highway whatever group.
They redesigned the ignition key for many of their models, in most cases this was simply a different hole in the head of the key rather then a slot so some dumbass can't hang 10 pounds of keys off it and cause it to turn. On Camaros it did away with your flip keys, pissing off more then a few customers. On most Impalas and other with the cylinder in the dash we glued inserts into the key.
I wouldn't bother making a trip to the dealer so they can glue or screw with your ignition key when it isn't broken. I am not talking about the ignition switch itself, a lot of those were actually broken and easily switched off, but this was only on Cobalts, Ions, HHRs, Soltices, Skys, and G5s.