Its only on the left side. I think it has something to do w/ the suspension because it doesnt' screech all the time. It screeches when I go over bumps in the road. Something metal is rubbing. Do you guys know what? How to fix it? Or how much it should cost? Thanks in advance.

 

could be your brakes.

take the wheel off and take a peek, im sure you will be able to see what it is.

 

It could be many things. Put the car in the air and shake the wheels side to side and up and down. Check the sway bar linkages and bushings.