my drivers side rear is starting to drag a little not enough to tell if you let off the gas but enought to hear it. i had this happen to my other car befor and it was the master cylinder. is that my problem... its not just a little squeek or i would just ignore it.

 

I'd start with checking to make sure they are properly adjusted and making sure that your e-brake releases properly (assuming you use it). My e-brake was causing my pass rear brake to drag because the cable was sticking. I used penetrating fluid and worked the cable without it hooked up to free it up, re-installed and no more dragging brakes.

 

my e brake has never worked ha. how do i know if there adjusted right?