Well im not sure i have only driven the truck maybe 100 miles sinc ei have had the truck for about 4 months...So i have no clue how many miles are on the clutch....This makes sense that the clutch might be glazed over or burned up that why it was chatering but what i dont understand is why when it is parked it makes that shhhhhhhhhhh noise like a friction noise of 2 things rotating against eachother...It seems like mabe if the clutch isnt adjusted correctly so when i push the pedal maybe it isnt fully engaging and the clutch and flywheel are still in contact and that is what you are hearing...I just dont want to have to drop the tranny to find out...When it is at idle and i pushed the clutch it shifts into both gears easily... Except after i hear that noise and i put it into gear and take it back out then put it back in it seems like the gears grind a little bit as if the gear was still spinning...to me that would say that the clutch had just enough friction with the fly wheel to spin the gear and so when i took it out of gear and put it back it was still spinning from before...Thanks for all the help