So my brakes were pulsating so I had them changed today. I drove it around a bit and after about 60 miles I noticed when I was COMPLETELY stopped at a red light I could hear this vibrating noise sounding like its coming from my brakes. I can hear it when i stick my head out the window and from the inside of the car near the floor. the car is an 07 ion with just barely 50,000 on it. I'm pretty sure its brake related but not sure what they did to it. something must be loose. it doenst do it when its in park only when I have pressure applied to the brake pedal. the second I let go it stops.
Any ideas?
Sheryl