I’m really thinking I have the same issue. Any luck? From what I read that range fork gets sloppy from wear and that actually causes ur speed sensor on the back of ur transfer case to not match the transmission speed sensor and that’s why it throw the pickup in limp
Just wanted to post on here that I went ahead and took out and tore apart the transfer case. Bunch of metal shavings in there. Mode fork looked good, however, the range fork was ate up. Going to do a rebuild kit and update if this fixes the issue.