Any ideas? I've since found that someone put regular brake fluid in instead of dexron III. Flushed it out but still having issues with brake chatter and hard pedal. Adjusted the pedal and bled the brakes a few times. Wondering if there's an issue with the booster. Any help would be appreciated. Thanks.
Also just noticed that when going forward and hitting the brakes to stop, just before the unit comes to a complete stop the drive wheels seem to try and go in reverse for a second...don't think this is normal but figured I'd throw it out there.