So driving to school this morning, i get off of the interstate and start braking, next thing i know there was this obnoxious squeeling noise coming from my left rear rotor. I pull into the gas station and look what is going on, there was a nice groove in the rotor. So im assuming some how or another something got between the pad and the rotor. Which seems impossible considering the pad is like 1/32 from the rotor. Great start to my day.

 

It happens.

My rears are grooved to hell. GM just makes **** brakes unless you get a ZR1.