I noticed the same chirping noise,it is very slight,if you turn the radio all the way down,when accelerating I can hear a light chirping noise.I took mine to the dealer,and to my amazement,they couldn't duplicate the problem.They said they put on a new serpentine belt.So i took matters into my own hands,i went out and bought a new Gatorback belt,when i put that on,there was never-sieze on the belt and on the pulleys.Cleaned them all up,put the new belt on,still have the noise,most noticable between 1400-2000 RPM.I even took out a new LBZ with Allison and i heard it on that one too.I might try a cat back system,it seems to be coming from the turbo b/c its not following RPM seems to be following boost.I was thinking adding the exhaust and getting rid of the restrictive muffler might do the trick.Glad to hear somebody else is hearing the noise also,but on a 35000 dollar truck ?? Let me know if you figure it out Real trucks and i will do the same.
I also have a chirping sound. It happens inbetween acceleration and deacceleration. If I bring the pedal either up or down it will go away. I don't remember it being so promenent before as it has been in the last couple of months. My truck had 43,000 miles on it. Thanks
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