Offroad-Express

Noticed the other day that at about 1/2 accelerator pedal there is a buzzing noise from the auto trans!!!
Anyone got a clue what this is?

its not something loose or broken on the transmission thats rubbing against something else?, or the interior tray thingy rattling?

Nah, to hear the buzz, I just put the key in the ignition to on, without starting it, and depress the accelerator and I can hear the buzzing from the trans, weird eh? Does it in N P & D.