Vibration "Squeak" Under Dash/Engine Area?

[Zooka]

I love my "new to me" '04 F350 4x4 PSD, but since I purchased it about a month ago, I've noticed a squeaking that appears to be vibration related coming from underneath the passenger side dash, but also seems like its in the engine compartment and not in the cab. Idling it's barely noticeable, but when I put it in gear (automatic trans), and the engine idle changes, its more noticeable.

I feel its vibration related, because I'll also hear it more going over a rough road, or bumpy asphalt.

Since this is my first diesel, should I be concerned?

Any suggestions would be greatly appreciated.

 

[DaveBen]

Get a friend with good hearing to try and pin-point the area while you drive. Start with the newest things that have been added, like a stereo radio. Good Luck.

Dave