I know I have been on here before asking for help with an annoying noise but I'm back!! It sounds like it is coming from the engine compartment somewhere and it makes the same sound as a shot out bearing rattling around - it is intermittent (not constant) It seems to be worse before the vehicle warms up and it is NOT the turbo - I know what it sounds like - this truck DID NOT make this noise for the first 9 months of it's life - and now it does!! It is a new and annoying noise - I just wish whatever it was would fly apart or just STOP!! If anyone has any ideas I would appreciate them - I, along with my service department, are all out of ideas!! Thanks