I have had this problem for a few weeks and was wondering if anyone else has had it. I have 14,000 miles on my aveo, and when the clutch is engaged (foot off pedal) it will make a chirping/squealing noise. As soon as i even touch the pedal, it goes away. If i am under the hood and grab the clutch release rod with my hand, and either movie it away or towards the slave cylinder, it goes away. It sounds like a bad preload on the clutch and the throwout bearing is touching and squeaking. Anyone else ever have this problem? Here is a TSB that i found for my EXACT to the "T" problem, except its for jeeps.
http://project-jk.com/images/tsb/TSB_06-002-07.pdf
Any help at all would be appreciated.