If you have a loud stereo system with big subwoofers, the constant vibrations can cause bolts to come loose. I had that problem with the steering column on a Cutlass that I used to own. I had three 10" subs on a big Kicker amp beating up rhe block knocking pictures of the walls. The screws in the column for the tilt steering mechanism came loose three separate times because of the bass. The Locksmith who took apart the steering column to fix it told me after the 2nd time, that it was the bass. He said "You got big subs in here?" He told me sees this a lot on cars with loud bass. Then he had to do it a THIRD time, and that's when he decided to use loctite. After putting red loctite on it, I didn't have them come loose again.