I started my truck this morning and while I was cleaning the frost off the windows I noticed a weird chirping noise. It sounded like it was the turbos, chirping as they spun. I have never noticed this noise before. Could it have been because it was colder, like 20 degrees. Or do I need to check into it further?? Anybody heard this before?

 

My 08 has a chirping noise but I know it is coming from the serpentine belt. Taking it in next week to get that resolved, warranty here I come.

 

look at this TSB in the tech folder: Ford Truck Enthusiasts Forums - View Single Post - Tsb 07-23-9