I have a 2005 silverado and I was driving about 25mph when suddenly all my gears now do not do anything and the transmission is stuck in neutral I have already checked the linkage and it is 100% intact. I don't believe that the transmission is junk because it olny has 95k on it im having trouble figuring out the causes any input would be much appreciated.

 

what troubleshooting have you tried?
is there fluid in it? Any warning lights in the cluster? fuses ok?

 

Is it a manual or an automatic transmission?