Universal Rear

Back processor is good or bad?
My car is a 04 GTO with low miles, and its appearance has been well cared for. Sometimes, when slower, even in normal driving, there is a processor in the rear. Sometimes not at all but I am concerned that may be the beginning of something. I remember long ago I had a 56 chevy I did and the universal will play in them and everyone said it was normal .. just annoying.
My husband says it sounds like a symptom of a potentially repair.In expensive your vehicle should not be any noise when slowing down. I suggest getting the rear carriage service. That would reveal any problems. You in our prayers, and remember that God loves you! Try to have a better day and a smile!
UNIVERSAL PANORAMIC REAR-VIEW MIRRORS