Hi guys. I have an '02 Tahoe. The front pads were replaced with ceramic pads last year. They should be fine considering how long this thing makes pads last. For about the last month, when coming to a gradual stop, for about a half a second just as I'm stopping, I get a little "errrrr" from the anti-lock brakes. It's not the wheels locking up, as it does it on dry pavement. As it's happening, I get a little pushback on the pedal, but the vehicle stops fine. It doesn't happen every time and only on gradual stops. On quicker stops it doesn't do it. Any ideas? Thanks!