2000 Chevy S-10

Hello, just a thought, the noise might be a pulley bearing for whatever is belt driven. I use a screwdriver with a long shank sometimes to locate noises, as an example, touch the screwdriver to the power steering housing or whatever, the shank of the screwdriver goes against your head, behind the ear. It seems to magnify the sound for me, my hearing is no good.

I just wanted to add, if you try that, pay attention and don't get caught-up in the belt or anything.