Make sure that you break through the casting in the right spot, it is thin enough to break through in two places about 1/4 " away from each other. If you break through at the one that is closest to the centerline of the column you will not be able to press in the release tab.The spot you need to go through is in the depression just inboard of the threaded boss for the turn signal switch.It takes a very thin narrow screwdriver to to it,you may also need to pry the lock cylinder gently at the same time you depress the tab.If you pry to hard you can break the chrome wing off the end of the lock.