99 K3500 CC LB 7.4L. I was driving this morning in heavy rain, running 55-60, when suddenly it acted like it went into passing gear. I lifted the throttle a bit but it never shifted back. I noticed the tach, speedo and gear selector indicator light all stopped working. I stopped and checked fuses and found that the fuses labelled PRNDL (Park, Reverse, Neutral, Drive and Low?) and 4WD had blown. I changed them and they continued to blow. I drove it to the shop in limp mode and he said he hadn't experienced that so I wanted to ask if anyone has an idea what the issue is. FYI, I left the 4WD fuse out the last time and the PRNDL fuse still blew.