I have a 93 buick skylark. the right rear brake locks up and tends to skid. the entire system has been replaced front and rear by a mechanic I trust. he said no fluid was leaking and said that this was "an issue" with these cars. he indicated that the normal accumulation of dust was causing this but didn't know of any remedy. He suggested I take it to a dealer, but that's probably going to be be expensive.

I had noticed that the rear brakes would lock up whenever the were cold and had even the smallest amount of moisture on them. I didn't really think any thing about it because it was not that big of an inconvenience. Until last January. I was coming to an intersection and I needed to turn. I started turning and the brakes locked up, and right into the stop sign I went. So I decided that before this winter gets here I should get it checked out. So I took it to a brake shop and they told me it was a common problem with that type of GM car. The drums that they put on apparently had a stupid designer because people were complaining of the same thing about 2 years after. The problem is that there is a pin in there that keeps the shoes from working right. When it gets the smallest amount of rust and moisture mixed it just locks up. Oh yeah, they also quoted me a price of $707.62 to repair all of the problems that I have with the brakes.