I have a 1998 coupe and have a belt sqeaking. This was identified during my chevrolet inspection prior to my purchase. The sqeak has gotten more persistant. It drives me nuts to driving a american icon that sounds like a cat is stuck under my hood. I have replaced the main belts with new GM belts and the sqeak is still present. With my engine at idle I have noticed that my main crank shaft pulley has a slight wobble. Could this be the culpret of my sqeak? I have looked into see how hard it would be to get a socket on the center nut and try and snug down/straighten out the pulley. Not so easy with the steering rack in the way. Has anyone had the same problem? What was your fix?