i noticed that when i play my sound system i can here something vibrating from under the car.. i jacked it up and looked around for something loose but i never found it. my friend said it might be something near the fuel tank?? have any of u come across this problem??? the noise is located in the rear of the car and u can hear it with fairly mild bass.. my friend was playing some music on his sound system and i heard it making noise

 

What year is the car ??
Is the noise coming from the inside or outside of the car?

Describe the sound if you can.

 

look up in the rear bumper shell for two pieces of absorbant styro-phoam, there is your culprit. if you had the car up, you should notice it easily, but on our cars, the shock absorbers, should they detatch, are the culprit. i still have this problem... only fix i see is taking them off or tacking them up some how, good luck

 

the car is a 2001, and the sound sounds like to pieces of metal shacking.. i can't describe the sound to well, sorry'