Tunda belt squeal when cold

I've got an '03 Tunda V6. When the truck is cold and it's less than 20
degrees outside, I get a long and droning squeak or squeal noise until
the truck warms up. I had the dealer mechanic look, but they couldn't
hear anything since it was too warm at the time. He "cleaned and
adjusted" all the belts, but the problem still happens when cold.

The noise does not directly match either RPM or MPH. If I push in the
clutch and rev the engine, the squeal gradually increases in frequency,
then goes back down. The dealer mechanic said that the clutch "free
wheels" and might be the cause since the noise doesn't seem directly
tied to RPM or MPH. In experimenting when it's happening during normal
driving, I find I can usually get the noise to stop if I just push in
the clutch and let the engine to go idle.

Does anyone have any thoughts as to what this might be? Thanks!!

in article [email]1141220214.146327.245750@z34g2000cwc.googlegroups.com[/email],
[email]elvl3@hotmail.com[/email] at [email]elvl3@hotmail.com[/email] wrote on 3/1/06 5:36 AM:
[color=blue]
> In experimenting when it's happening during normal
> driving, I find I can usually get the noise to stop if I just push in
> the clutch and let the engine to go idle.[/color]

Isn't that the classic throwout bearing symptom? Or am i backwards here?

-jeff