Help please

I have this rattle in the passenger side rear shelf of my car. I tightened down the rear shelf speaker which was loose but the rattle is still there :nonono: . Anyideas on what it might be. It rattles when i hit any size bump on the left or right of the car. Thanks for you alls help as usual.
 
gtstangrunner said:
I have this rattle in the passenger side rear shelf of my car. I tightened down the rear shelf speaker which was loose but the rattle is still there :nonono: . Anyideas on what it might be. It rattles when i hit any size bump on the left or right of the car. Thanks for you alls help as usual.

I've had a rattle comming from the rear passenger side package tray for 2 years now. Almost sounds like the back glass is loose. Never been able to find it yet and I've torn the interior out looking for it too. I just gave up and turn up the stereo a little louder.

U.M.