My engine sounds funny from the outside.

[deeve]

The other day I noticed a weird sound coming from my engine while I was walking around the front of the truck. It almost sounds like a leaf flapping in the wind from the fan, but I can only hear it from the outside and could not find anything that might be making that noise. I open the hood and everything sounds fine. It is hard to tell where it is coming from, but it appears to be in the lower part under the grill. Attached is a link to a youtube video I made. Hopefully, you can hear it. I don't know if that is normal or not, but in over a year of ownership, I have not heard that before.

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[deeve]

I looked around and didn’t see anything but it sounds exactly like you are describing. I’ll crawl around some more and see what I can find.
Thank you
Dave