I have a 2005 QC CD. The issue I'm having is when I take off when truck is cold, the truck makes a whirring/moan sound but only when cold. Is really hard to deifne where it is coming from possibly rear-end? Anyways its kinda weird because for the first 9000k it didn't make this sound and now it does. Only thing diferent is i went to bigger tires 265's -305's but the sound was still there with the smaller tires. Does anyone else have their 2005 QC CDiesel doing the same?[:@]

 

i have a 05 with 1600 miles on the clock and mine does the same thing.
the only gues i have is maybe the fuel pump because it is so cold but who knows. no real way of pinning it down as of yet but i'll know if anything goes on it. i think she is a fair weather truck who doesn't like getting up in the morning.