I have a 2008 Silverado LTZ 5.3 I bought new. The fan belts started squealing 2 months later. I replaced the belts. Two months or less later they're squealing again. Replaced the belts. I've been doing this for 11 years. Then I replaced all the idler wheels and both tensioners. 6 moths later the belts are squealing again. Other than what I'm doing now, is there a fix I don't know about?
I've had vehicles that I never had to replace a fan belt or idler wheel or tensioner. What's up with this Chevy?
Thank you

 

Welcome from Florida. I would look for a cause of the problem. Is there an alignment issue with the pulleys? Are you getting the correct belts? I had a squealing problem a few years ago and it turned out that the auto parts store sold me a belt that was a bit too long. Is oil getting on the belts? Is it both belts squealing or just one of them?

 

I've had the same problem with my Chevy truck I changed belt, I've bought more expensive belt, I changed pulleys and I could not get the squealing to stop and basically was giving up with my truck until I went to NAPA and bought some BELT DRESSING in a can and sprayed some on the belt and SQUEALING VANISHED never came back !