I need my truck this weekend --prom, fishing opener, etc. Problem is with the transmission--while truck is running I can't get it into gear. I can barely force it into 3rd (L-1-2-3 sm465) and I can jamb it into R. It seems like the synchros are not working. I can hold it near R gear and ear that it's spinning fast. Doesn't matter how many times I clutch and reclutch. When the engine is not running, I can move the shifter into all gears W/O clutch! I don't like this. What can I do to figure this out? I really need some help--thanks guys/gals. Well, the level of fluid in the resivoir on the firewall seemed low, so I added a little (hardly any) but didn't notice any difference. Could there be air in the system? Could it need to be bled?