Rear Brake Makes Loud Thump when Released.
I have a 2008 Cobalt LS automatic. When I release the brake pedal there is a very loud "thump" noise from the rear end of the car. The car slows perfectly and there is no noise while accelerating, slowing down, or stopping. Only when releasing the brake from a stand-still.
As silly as it sounds, along with the noise it feels like there is a small "bounce" in the rear when I let off the brake pedal. Also, it is much more frequent/noticeable when it is wet/raining.
I have yet to check anything. Thought I might get some ideas first, and see if anyone else has had a similar problem.
Any ideas as to the problem would be appreciated?