Whishh noise when shifting?

[Dan Acosta]

I dont recall this noise from when I bought the truck, but there seems to be a whishhh noise when it shifts. I am trying to note exactly when it happens. It is most notable when i am cruising at lower speeds. If I am accelerating hard I dont notice - kind of happens when it is alternating between gears at low speeds. I would say it happens as the truck is getting ready to shift. Anybody have thoughts? I have a 4l80E (03 2500 Yukon). Doesn't seem to be a hindrance to performance and the noise is somewhat faint.

 

[SnowDrifter]

Are you able to get an audio/video capture of the problem?

 

[Dan Acosta]

I will have to try.