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Throwout bearing chirping or something else?

4237 Views 7 Replies 7 Participants Last post by  01Duramax6spd
Sorry for the rudimentary question as I am new to the DMF & SMF clutches:

My 01 Duramax has a occasional chriping/squeaking from the transmission when the clutch pedal is depressed. I was quick to jump to the concusion that the throw-out bearing should be replaced when I can get to it. After reading here about the flywheels and other stuff, I want to make sure that I haven't mis-diagnosed and actually this is normal, or worse like a very expensive repair. FYI the flywheel replaced 50K miles ago at the GM dealer by previous owner (now has 129k miles).

The last time I replaced a clutch was about 6 years ago and it was on a Chevy 3/4 ton 4X4 350/SM465/NP208. Took about three days and I remember the PIA it was to lift the trans by a cherry picker with a chain though the t-case opening in the floorpan. Not really looking forward to 3 days on my garage floor again.
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It happens only witht the engine running, but that is a good tip to check the slave. Actualtion has always been spot on.
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