when i drive my 00 gt through town at a speed below 40 mph i can hear a chatter comming from the car as soon as i touch the clutch pedal it goes away, the noise sounds like a chh chh chc as fast as the wheels turn ? anyone have this problem also? is it a majhor problem breaking out? i ahve to take car to nc next week and would like to know if i should fix now or not.. tranny shifts fine and gears dont grind.