What is wrong with the ignition of my car if the key won't go in the ignition? on 2004 Cadillac DeVille DTS

A foreign key was put into the ignition by mistake, now the right key won't key won't go in.

by in O'Fallon, MO on November 12, 2012
2 answers
ANSWER by on November 12, 2012
maybe tumbler
ANSWER by on November 13, 2012
sounds like the lock pins inside are gamaged call a mobile locksmith in your area to repair