Traction Control?

[NJHummerGuy]

I did exactly that today when going in to the office....I cut the Trac System and didn't hear it....but, i can go in a parking lot and do the same thing.....also.....it seems just to make it more strange that if I have trac control on and go over some bumps i can hear a quiet version of it....when I cut the trac control I do not hear it.
Am I nuts in thinking that there is issue? I would think that if it was normal others would hear it as well.....

Also....in the snow we had a few weeks back I went to the 4high lock....when I went back to normal 4 the noise was gone then has come back after about a week......not sure if going between the 4x4 modes matters...or just something to make it more confusing...

Thanks for the info f5...always great to get help.....does anything I said above make it any more clear or is it as clear as mud?