Immacomputer
10+ year member
Cloud disappear
That's what I did and it worked very well. I stuffed foam behind it until there was nice pressure holding the foam in and walked away.You know the thin foam that comes in boxes sometimes laid on top of everything? It is like a closed cell foam that is about 1/8" thick? I stuck that behind my license plate and it stopped the rattle. Also, for about $0.50 at Wal-Mart you can get a sheet of FunFoam/Foamies and put that in between the license plate and your car