AWD Fuse blows, Service AWD light on
 

First off, I apologize if this issue has already been addressed.

So, I have 1998 Oldsmobile Bravada with the smart track. The AWD fuse under the hood would blow and we would replace it. Did that twice. Now the Service AWD light is on, but the fuse is good. The AWD does not work currently. I have read that changing the fluid might work, or the TCCM may be bad, or the AWD motor could be bad. Before throwing parts at it, I was hoping someone here could steer me in the right direction.

Is there another fuse or perhaps a relay I should be looking for?