rear brake squeal
machine the rotors on the slowest cut possible on a brake lathe replace the pads, adjust the ebrake so it doesnt drag. After doing all that the part they probably dont tell you if they fix the squeek is driving habit suggestions. Do not perform heavy or frequent brake applications. When coming to a stop dont wait till the last second to hamer the brakes to make the stop. begin a moderate brake early then let the brakes glide you to a stop your goal when making the stop is to come to a complete stop with out the car rocking at the end of the stop. That resolves the heavy braking the frequent brakeing comes from stop and go traffic where the cars pull forward and you gun the throttle to keep up only to hammer the brakes to stop again. Let the cars roll away from you some then just realease the brake and roll up to it if you need to move to keep with traffic flow slowly give it gas even if they are pulling away. I dont know that you actually drive like these descriptions but what I have found on ride alongs with customers concerned with brake squeek those are common driving habits among them. What we see on the brake rotors and pads is glazing from the heavy braking.