I have a 2002 PT Cruiser. I heard a grinding today and thought I needed front brakes. So I had my son change them. When he attempted to do so, he said the right brake was fine but the left brake was worn. He put the brake on and attempted to drive it. I think before he even got that far, he noticed that the caliper was leaking like a sieve. What gives with that and how much is THIS going to cost me? He's changed brakes before, don't worry. He also made the comment that the last person who had worked on the car put on a huge bolt instead of what shold have been on the brakes (?).