Chevrolet Trailblazer Serpentine Belt Noise

I Have A 2006 Chevy Trailblazer,that Makes A Squeeching Noise When I Excellerate,the Noise Calmes Down When I Decellerate, The Noise Is Up...

What Causes A Noise Near The Fan? I Put Belt Dressing On It Did Not Work. What Else Could Be Causing This, It Tends To Get Louder When You...

I Have A Trailblazer, And Every Time I Accelerate It Sounds Like A Cat Dying. When I Popped The Hood I Found Out That The Noise Is Coming...