Camaro 5 speed manual will not go into 5 or reverse gear... it feels like something is blocking it I can't even get it over far enough to put in gear.
Sounds like the gear select gate (couple of sliding plates where the gear shift goes into the transmission box) has blocked. Could be the spring that you usuall push/pull against to go through the gate. Anyway, not a DIY thing to muck about with. Will probably have to drop the transmission to get at it.