I have noticed a rattle latley. It seems like it is near the fuel tank. I watched a 3500 pull up next to me today in a parking lot and he had it also. It is a tinny sound. Do they all have it and what is it?

Usta

 

Torque converter?? My Fords had a similar noise that you described.

MikeyB

 

I crawled under the truck today and found that the clamp after the turbo was loose. I either didn't tighten it after dropping turbo to drill the EGT sensor or it loosend up after. I think we probably forgot to tighten it. I am glad it is summer and not winter, I think if it sucked some cold air it might have been bad on the turbo.

Live and learn! Usta