I have a 2006 1 ton cummins that has all of a sudden decided to start blowing the 30 amp diesel pcm fuse. Not sure what the problem might be. Talk to the service department. They told me it had to be a short some where, or possibly a short in the pcm it self. I checked all the lines from that particular fuse and could not find any kind of short or damage for that matter. Any help would be great I am kinda at a loss and a dead truck in my shop.