2004 Chevy Blazer ZR2
So my belt still squeaks in idle and drive and I have replaced the idler and tensioner pullies, the tensioner itself, the alternator, and the belt itself. I have also tried belt dressing to make the belt itself stickier and nothing has worked. It still squeaks and its driving me crazy. If I pour some wateron the belt when the engine is running it temporarily stops the noise until the water has dried. Is there anything I can do to stop this before I drive this thing to the junk yard!!??

 

lololol...dont junk it just yet... try inspecting your pulley's closely, look inside the wall's of the pulley's where the belt run's and see if one of them is real shiney, like the belt is rubbing the wall....this will cause a bad belt squeek, almost enough to **** ya off...anyhow, if you do find one that's been rubbing try adding a shim or two to the mounting bracket of that accessory too make that accessory's pulley line up true with the belt and other accessories. Hope this help's ya!
Mindless

 

Belt dressing is worse for it. sorry.