I have a 2006 aveo, something strange has happened on this car in the last month! When i go to stop at the bottom of my road ive pressed the brake pedal and it will not move, you cant push it down at all and im a pretty good size guy, It scares the by jesus out of you! Its almost like an air lock or something similar. It has only happened in this same spot twice, ive had to grab the e brake to stop, when i pull out on the highway everything is all good again, brake pedal pushes easily and brakes work good. Any ideas where to begin would be an awesome Thanks!