I have a 1995 Toyota Camry LE. It is a 4-cylinder with a mileage of 128568. For the past two weeks, I've been hearing a noise each time I brake. The noise begins once I run the car for about five minutes. The noise comes from the back of the vehicle. The sound is similar to an old creaking door. I have no idea what is causing this noise. I know it's not the brakes, because I just changed them about three months ago. I also checked the discs, but they seem fine. They're not even scratched. I'd appreciate any assistance. Thanks.