95 Aurora just buzzes when turning the key?

Occassionally my 95 Aurora will just buz when I turn the key. I may do this once for four or five times before the car will start. It has never left me stranded, but I just want to know if anyone else has had this problem and if they have what is the cause of it.

Thanks,
Bobg

possible bad starter solinoid

The noise actually comes from under the dash. I thought at first is may be the starter solenoid, but then when it did it the next time I could tell that wasn't it.

Bobg

never heard this one B4

relay or ignition switch???