throw-out bearing going bad is my guess
Yes.Equally likely is if the belt is much more than 3-4 years, the material is glazing over or hardening, which is another common cause of squealing.
Many things, but a clutch bearing seems likely.
A worn belt will cause a squealing noise. The squealing noise is caused when the belt slips. Tightening the belt will temporarily fix the problem.
If it's a manual transmission, it might be the throwout bearing. However, this noise would only occur with the clutch pushed in. If it does it after you let the clutch out then it might just be an accessory belt that needs tightening.
Yes it is most likely the clutch release bearing and i would say 400 to 600 is about normal for clutch replacement.
The most common cause is slipping belt
Brakes most likely
Check the belts. The most common cause of squealing is a worn or loose belt on the front of the engine.
Yes, if the compressor's bearings are bad, usually accompanied by a roaring or squealing noise coming from the compressor's pulley.
The clutch is working fine. The problem could be as simple as a loose belt.
Loose or worn belt(s).
check a/c compressor and belt.