JARED_LA
Veteran Member
Not sure how long it's been making this sound. I hear a faint high pitch noise only at idle. Is this normal?
Heh - you should listen to my 6.0Could it be turbo whistle? I've never noticed it on this car but when I swapped to a 4" cat-less exhaust on my Duramax, the turbo whistle was vary loud. In fact, when I started the truck when it was cold, it sounded like a jet engine spooling up.
Exactly what I was thinking!Heh - you should listen to my 6.0