Constant ringing in cab

The past few days i have started to notice a ringing noise inside the cab at highway speeds, starting at 65-70 or so and it gets louder/more constant as you approach 80.
There was a few things i could think it would be
A. LCA Holes
B. Door seals/Door jams
C. Mirrors
D. Possibly windshield? Maybe my rain-x wipers? Lol

only thing is that after seeing some of the videos in those threads/how those noises are described, my noise doesn’t really sound similar (more of a ringing, than kazoo/wind noise). It also just started getting cold/windy here. Any ideas?

PS: Im sure it needs to be parted out

 

I had a similar noise until i installed AVS low pro window visors, although im 90% sure mine was wind noise

 

Thats weird, I hope you get some answers that help.

 

Is it the corner pieces of your pillars/dash vibrating creating a ringing type of noise? In the cold they can make funky noises..

 

Is it linear with speed? Might be your rear millineal diff whine?

 

it only appears around highway speeds. Starts pretty faint and intermittent, gets to be a bit louder and more constant as you approach 80. I didnt think it would be the diff, rolled the windows down and i can’t hear anything outside the truck at all that i can tell.

 

I was reading about that, ill have to check that out too.

 

I have some sitting in my Amazon cart, more reason to pull the trigger i suppose.