squealing

Hi everyone. I have a 2009 z71 Tahoe. It has about 141,000 miles on it. Recently I've noticed a squealing noise while driving at a low speed. It's worse when I turn corners and it happens while I'm decelerating also. Any ideas or advice?

Hello,i have a 2001 chevy tahoe with 120,000. I had a bad squeeking/squelling coming from under the hood, replace the tensioner and ideler pullies, and no help. Took it to a mechanic told me the barrings in the alternater where going out. I replace the altenater and the squealing completly gone...