I have an 08 LS with a rear brake squeak and Ive heard about the warping of the rotors but are those just the fronts?. While rotating the tires me and my dad checked them briefly and they dont seem to rotate well they hesitate in areas. Would these be covered under warranty, I have 25350 miles as of now.

 

Abnormal brake squeak is covered. But turning the drums and or replacing the shoes wont fix the noise. It's up to the dealership to determine if it's abnormal.

 

I adjusted my rear brake's and now I have a vibration coming from the rear. I also turned the drums and still have it. I hate the brakes on this car