Hi, this is my first post. I have a 2004 Chevy Silverado Z71 with the 5.3 engine. One belt application to the best of my knowledge. I had a slight belt squeal when the vehicle was first started and would usually go away sometime after the truck warmed up. Its cold in Ohio right now. I tried to spray some belt dressing on the belt and this really made the belt squeal or whatever is wrong. Now it doesn't go away after warmed up and does increase with engine RPM's. I just applied spray last night so it might wear off and quiet down some over time. What could be wrong to make the squeal worse after the belt dressing? The belt was replaced about a year ago. I did spray the belt dressing on both sides of the belt. One other thing is that the belt noise did go away right after I applied the belt dressing but didn't take very long for it to start squealing.