Ive got a 03Grand Prix GT l36 and from what the walmart guy told me, my rear pads have dug a hole in the rotors and Ill need to replace both the pads & the rotors... I havent actually looked at them yet but Its about time for them to go.

so first, wtf happends to the sqealer? Arent you supposed to hear that crap before your pads dig holes in your rotors?

And second, is it worth it to go get the OEM parts over Autozone etc...