I have a 2005 ram 2500 5.9L cummins with a 6 spd, im having a problem with my clutch. After I drive for about a half hour, whenever i realease or push in my clutch in low gears the clutch squeeks, it only happens after the truck is warmed up, and only if the truck is on, and it doesnt always happen, I dont think its my main bearing, I bought the truck at 23,000 miles, and i just hit 36,000, it started doing this at about 35,000. Any help would be appreciated.

Thanks