I just upgraded my 1999 Z28 to the 2001+ hydrolics and Z06 clutch kit. My question is that the GM master came with fluid in it already. Is the system pre-bled and ready to go? I don't want to screw anything up before I test it out.

 

The master cylinder comes prebled. Many people wind up disassembling the master cylinder to perform the "drill mod"...which means that the master cylinder needs to be rebled before it can be used.
If you aren't going to do the "drill mod", then you can just install the master cylinder, bleed the slave cylinder, and then

 

So the slave is going to have to be bled? or is thing ready to go right out of the box?

 

The slave needs to be bled. If they put fluid in the slave from the factory you'd never get the trans on. Use a mity vac to bleed the system thats the factory recommendation.