[Prabie]

Hi:

The air conditioning systems of my 2002 EC Silverado roars noticeably when it is set over 3.

It sounds like a piece of paper or a leaf was suctioned and if vibrating inside the ducts.

Is there a easy way to clean the air path?

Pedro from Chile

 

[ChevyFan]

Not sure about the 02, but most years you can pop-off the vent cover and try to vacuum down inside there. That's worked for me in the past. In theory, anything inside there should blow out if it's free.