I own a 1999 Chev Malibu, my turn signals and hazard lights all work properly however hen the switch is in the central position. It clicks rapidly and intermittently. If I wiggle the switch a little bit it stops for a bit at least until I hit a bump or use the turn signals. Is this problem being caused by the multifunction switch? Or is it caused by a faulty relay? I have a used multifuntion switch being shipped to me right now as I was under the impression that this was the cause of my problem

Replace the turn switch and retest. These are prone to failure and will need replaced if at fault.