Help! Front Driveshaft

So last night it started snowing up here and the roads got a little slick. So I put it in 4WD. When I did, my car started almost making a low roar or rumble. It only does it when it is in 4. I assume it is the front driveshaft.

I just got a new one cause I added lift about 6 months back. It hasn't given me any problems before.

Does anyone have any ideas of what it could be?

anyone, anything?

I just took a look underneath. And without taking it out, everything looks normal.

Pull your front driveshaft. Noise still there? If so... possible time for t-case chain.

Check your linkage. Turn up the Music too.

IF after removing the front ds; the noise goes away... do an inspection of the U joints and centering cup.
Recently after a local Jamboree; I had a rubbing/rumbling sound on the way home.
I couldnt locate the noise until I removed the front ds and the noise was still there.
Driving really slow with my head hanging out the window I could hear the noise.
Removed the rear ds and installed the front; there was a slight rumbling when driving >45 mph, but the rubbing/squeak was gone.
After inspecting the rear ds; I discovered a slight rubbing feeling when oscillating the double cardan joint.
Brought both driveshafts to Oceanside Driveline and had the balance checked on the front ds and the rear U-joints inspected.
The front ds was out of balance and the rear ds had one U-joint cup with a bad needle bearing and worn trunion.
After the rebuild of the rear ds and the balance of the front ds; I had the tires spun balance; just to make sure.
The Jeep drives so.... smooth.....

okay. thanks for the help. I will check it out, and let you know what I find.