Reddit reviews Dorman CC649041 Clutch Combination Master Slave Cylinder Assembly

I let the vehicle sit overnight and bled the clutch again the next day, but I definitely did not leave anything in the hydraulic clutch system open overnight.

I have used this master/slave replacement: https://www.amazon.com/gp/aw/d/B0049MFPFA

I think it was advertised "pre-bled" - the one I got had fluid in it but was absolutely not pre-bled. Also, the fluid it shipped with must have been very low-quality, as the clutch felt "creaky" for weeks even after I got it bled properly. I finally flushed all the original fluid out and replaced with regular old DOT3 and the "creakiness" in the pedal stopped.

Hope this helps you out!

You could wait on it. The slave cylinder on the nv3550’s are external, held on with two bolts through the bell housing and can be changed without dropping the transmission. Come to think of it, if you believe your clutch is fine, it might be a good idea to change it first and see if it solves the problem. It’s also an option to get it and the master cylinder as a whole new unit including a new line already connected to them. here’s an amazon link but if the pedal doesn’t seem soft I doubt it’s the problem. They tend to blow the seals and leak and be soft rather than get clogged and get hard/cause shift issues in that manner. Any shop could pull that and bench bleed it as well and know right away if it’s causing any issue. I will say though, those trannys are bullet proof and I’d bet your issue is clutch related rather than the transmission.