[AbGilley89]

I have an 07 4 cylinder se and I have noticed at highway sped I hear a grinding/buzzing noise sounds like it is coming from the middle of the car. It does not make the noise under acceleration. It does not sound like a wheel bearing, did not know if anyone had any ideas of what this might be. Secondly I recently had to replace the left rear brake caliper because it was stuck and eventually wore out the brakes. I have noticed that when I pull the emergency brake when driving the car pulls to the right but does not do this if I use the brake pedal.

 

[Tom Silvia]

did you replace your rotors as well? the inside of your rotor could be grinned and that will make noise at highway speeds