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Well I am not 100% that it is the transfer case humming. But it only hums while in 4x4 mode. It is just a slight hum.
Is this normal, if not is there a way to determine why it is doing it?
 

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tarnationsauce2 said:
Well I am not 100% that it is the transfer case humming. But it only hums while in 4x4 mode. It is just a slight hum.
Is this normal, if not is there a way to determine why it is doing it?
It's normal to hear a slight 'gear whine' while in 4lo
 

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the hum comes from the gears meshing. all 4WD do that, nothing to be afraid of. you probably want to change the fluid, since its probably never been changed and take about 5 min to do.
 
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