All, I have had no issues with my drive train. Drove my truck to town a month ago and brought it home and parked it under the lean to. Got in it this past Saturday and can't get it in gear? It just grinds. Its like the pressure plate is gone, no warning or anything. Has this happened to anyone else. I have a 54 3/4 ton dually with a 4 speed manual transmission. I've laid under the truck and had my son push in the clutch pedal without the truck running of course and all the linkage is working. I can see the throw out bearing move back into the pressure plate area. I don't necessarily mind dropping the transmission but I'm just wondering what else it could be? Are there synchronizers that could have went out in the transmission or is it just a simple clutch issue? Any suggestions or story's of how you may have fixed yours would be greatly appreciated. Thank you