wrangler noise

Hi guys, my 2000 Wrangler (auto trans) sounds like a buzzing bee above 20mph no noise when stationary. No difference in 4WD. New front brakes and u-joints - any suggestions? Cheers.

Can you tell where the noise seems to come from? Front, rear underneath you? Hard to diag with the info given. Good Luck.

If you've gone 4 wheeling lately, I'd check for a branch stuck up under there somewhere.