I changed the slave cylinder in my truck, now my truck is hung in gear. What could be the cause of this and how can I fix it?

the master cylinder slave or cylinder
or both

slave cylinder failure
slave cylinder in inside gearbox housing gear bo out to fix

if replaced both ...still air in the system

if still no better a clutch fork or clutch problem..gearbox out

Does the car want to pull when sitting still in gear with your foot on the clutch? If so, I would say that your clutch is not fully engaging and could be the cause of your grinding when changing gears. If not then I would think the clutch is operating fully and the synchros are worn and need replaced. But either way, with metalic fluid being in the slave cylinder dust boot, the slave cylinder needs changed.

the clutch is shot or the linkage is busted.

that sounds like a throw out bearing failure-is there any adjustment at the slave cylinder-it may be holding the bearing against the clutch and causing the noise-this thread may help-http://www.jeepforum.com/forum/f9/how-change-bleed-clutch-slave-cylinder-511531/- cheers Denny

Is your clutch master cylinder's fluid out,if so then your slave cylinder is leaking.It's bolted to the side of transmission,look for leakage,you can fill reservoir and bleed and it will work for a while.

Sounds like it was being forced before and through out the syncro to the gear, not a hard thing to fix but very time consuming.

you need to replace the clutch master cylinder. then bleed all the air out then it will be fine.
also check the slave cylinder.
give me feed back if this works for you thanks

HI,

I think your clutch has some problem or the slave cylinder is not working.

Get it checked at the service centre.

Regards
Kanu

take it back to the shop they have done something wrong .. its either got air in the lines to the slave cylinder or the clutch is not adjusted properly.. thanks jerry

First, try bleeding the clutch system - it's possible that a pinhole leak somewhere has allowed air into the system. If that doesn't fix it, you're looking at a clutch slave or clutch master cylinder, as a failure of either one will cause the symptoms you have. The slave is less expensive and less involved to change, so I'd start there simply for those reasons. If a bleed doesn't fix it, and the slave cylinder isn't the cause, then you need a master cylinder most likely.