I would personally NEVER pull the transmission to replace any of the clutch components without replacing all of them at the same time... clutch, pressure plate, throwout bearing and pilot bearing! Too much work to have to do again in a short time.

If the hydraulic system is new, it sounds like the syncros are bad to me.

 

from what i've read the nv1500 was introduced in 97,
and you're right they are sealed systems, dosnt mean she dosnt have a low fluid problem

 

yes its a V8 and yes i have that resevior next to the firewall and brake booster and its brand new and full

 

Ok, so you have the nv3500. Is it cold where you live? Mine shift kinda hard in cold weather. It helped when I drained the crappy Mopar MTL out of it and put in Redline MTL.

http://www.redlineoil.com/product.aspx?pid=45&pcid=7

You can get it from summitracing.com. But do you know what's in there for fluid right now? If anybody ever changed it and put in gear oil, your going to be buying a transmission, cause the nv3500 is finicky about the fluid you can use.

 

Does the clutch "feel the same as it always has?

 

I really doubt its the clutch. Clutches don't typically not dissengage unless there is something wrong with the hydraulic system, and its brand new according to dakotachic82.

But just to rule it out for sure, put the truck on level ground, put it in 1st, and hold the pedal down, if the truck rolls at all, then the clutch is not disengaging.

 

clutch feels the same as it always has and yes its cold where i live its about 30 degrees and snowing and no i dont know what kind of fluid is in it now

 

ok im gonna go see if it rolls in 1st now

 

And see how far up the pedal it takes before the truck starts to move.

 

Actually, I just thought of one more thing to add to the list of possibilites. The hydraulic system can be good, but the "fingers" on the pressure plate can be worn out. The throwout bearing pushes on those fingers, which pulls the pressure plate off the clutch disc. If those fingers have lost their intregity, theyll bend, causing the pressure plate not to be pulled away from the clutch.

There's one things that now that I've thought of it, is leading me to think this is the problem. You said you replaced the throwout bearing... if it was siezed or tight, it could have been rubbing on the fingers causing them to get hot and wear out.