Tranny wont shift into fifth gear.

sounds like the new clutch has failed bud

Then the clutch is not releasing properly & the continual
grinding will wear the gear teeth & you may also have worn
syncros, that will require you to pull the trans & go thru it, as well
as do a clutch replacement

I believe it's your clutch. If you can shift gears okay with the engine off, but you cannot shift gears with the engine running, (the gear shifter only grinds when trying to shift into first?) then your clutch has worn out.
To replace a clutch, the transaxle has to be first removed from the car. I'm afraid you will have to have it towed to a shop or garage.

could be shift fork thats in the tranny or it you could have snapped the main shaft not an easy fix you might want an expert mechanic to take a look at it good luck

Hey I have a 1999 cavalier z24 5spd All my gears work except 5th while puttting it into 5ht gear as i let out of the clutch its grinding so i cannto put in 5th or it will grind, but at times it would work, but recently as Ive been driving I go to put it in 5th, there isn't a grind its as 5th gear is just netural NEED HELP geoff

time for a clutch

If it's what I think it is...the same use to happen to me with the car you see posted here. The gear box sometimes gets stuck in two gears at once causing the problem you describe. I had to get under vehicle and shift one of the gears on tranny itself to an other position to unlock. I think this was happening to me because I would take shortcuts in shifting like going from 2nd to 4th. Hope this helps you out.

have you checked to make sure your clutch fluid is topped up? low hydrolic fluid can sometimes cause this.

strip and repair job is only soloution the selector is worn or the gear its self is cream crackered

try bleeding your clutch