I was driving around town today and with the roads not being plowed I had to put it in 4wd. Needless to say when I hit the gas or coast the tcase will hum. I dont remember the truck doing this last year or since I owned it new. Any ideas?

 

Anybody...?

 

First check the fluid.

 

Ha. Mine does it too. Doesnt mean its normal though. Try going 60+ in 4 Lo if you wanna hear something... lol.

 

I hope you are joking about goin that fast in 4low, because they are only supposed to go up to 20-25 at most. To the op, I agree you should check the fluid level first.

 

Ha. No I am not. I have done it many times. Prolly 30 or 40.

 

Mines 4Hi, between 10-35.