My license plate on the back of my trunk is vibrating so loud I can hear it in the car. Has anyone had this problem and found a really good solution?

Two solutions:

Expensive - Buy some dynomat, you're looking at $30

Cheap - Head to "Michaels" or any other crafts store. Buy a chunk of "non hardening modelling clay". Apply to the offending area with fingers. Cost to you $2 + 5 minutes of your time. I've had some on the back of my car for 5 years now.

Dynamat even makes a specific kit for this...

http://www.dynamat.com/images/car/License-frame-Kit.jpg

2 layers of Brown Bread will do it ;)

So should I put the Dynamat on the trunk part or the plate part or both? The plate is really jumping..even the trim on the trunk lid is vibrating.

ps. Dynamat is only $5 a square foot at Future shop.

I used a bit of silicone on the rear plate for my last car... never had a problem after that.. cheap and simple..

u can get either some foam pieces and tuck them like padding or use sounddeadner of some sort and no more rattles ---oh i drilled in the middle of the plate and put a screw into and it worked too

Good advise - thanks...

I have used the high dens foam tape that is used for Truck Canopies between the plate and car.

Works great!!!!!!

Silicone here also. Just use the type that you can peel away so you can remove it easily when changing things.