Is this fuse in the battery box? If so, there was a problem with some of those blowing fuses. We had to replace the fuse holder/battery cable, It was an update to solve these problems. (I believe it was a tech service bulletin).
No the xsmn fuse is in the side panel on the main fuse block. As for the fuses in the battery box there fine. I did hard wire the connection because it was burnt up. My next step is to unplug everything leading to the trans to see if the fuse pops again.