Squeaky clutch pedal
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It more than likely is the slave cyclinder. I had this happen on my 98 and it turned out to be the slave cyclinder. If your truck is still under warrenty, take it back to the dealer and let them fix it. If it's not under warrenty, it is something that you can repair. You will need a transmission jack or a really good friend to help pull the trans. The slave cyclinder is located in the bellhousing and the only way to get it is pull the trans. Hope this helps and good luck.