If you're removing the transmission for any reason, make sure you replace the slave cylinder while you've got everything apart. The weak link in the factory hydraulic setup is the master cylinder, so there is no need to upgrade your slave - just keep it fresh. Now is a great time to upgrade to our Tick Performance Remote SPEEDbleeder Line, as well!
This unit includes a throwout bearing, as well. Trust in GM quality - don't trust an aftermarket slave cylinder!