This isn't for 67-69 but it is an F-body question and I am hoping all of the knowledgeable people out there can help me with this extremely annoying problem as you guys have come through in the past on other problem for me. I have a 97 Trans Am and the serpentine belt is squealing loudly, ALL the time. I bought a new belt and that didn't help. I bought a new alternator and tension pulley and still nothing. I then took a power drill and wire wheel brush and took the belt off and cleaned all of the pulleys out so that there were no pieces of rubber, rust or debris in the grooves, still nothing. I then sanded all of the flat pulleys and cleaned them with laquer thinner...nothing. I know it is a belt noise because if I spray the belt with soapy water, the squeal goes away immediately, but comes back moments later when the water dries out. I tried putting wax on the pulleys, but same thing...it dries out quickly and the squeal is back. The squeal is all the time...at idle or driving. I don't even want to drive the car anymore as it is THAT annoying and embarrassing. I have heard that belt dressing stuff does not work. Will this solve the problem? I have absolutey no idea what to do next. Please help as my sanity is at stake. I used to like driving the car, but no longer. Any and all suggestions are greatly appreciated.