How to Replace a Vacuum Modulator on a GM TH350/TH400 Transmission

How to Replace a Vacuum Modulator on a GM TH350/TH400 Transmission

I finally found out why my transmission wasn’t shifting the way it should. It wasn’t quite what I expected, but I guess I really got lucky. It turns out I really didn’t have to replace my vacuum modulator at all, but since I had already bought a new unit, I figured I would show you guys how to do this job. I still have to set my shift points, and there will be a video on that, so if you learned something new, and enjoyed this video please subscribe to my channel!

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Comments

Spence Hogg says:

One comment here. It's also good to check the short rubber hose at the other end of the vacuum line at the engine intake manifold for leaking. This one will harden/crack and leak as well… ; )

Luis Felipe says:

Yea this video was indefinitely helpful to me …but the way you pulled up man, fucking stud

Bob Smith says:

Good video! Thank you, helped me out.

Brady Solaem says:

Mines flooded with atf in my Deville

Cesar Gonzalez says:

Do doo do doo Mary Jaaane! I’m Rick James Beeatch!

ADAM CORONA says:

Quick question. So one end of the hose connects to the vacuum modulator but where does the other end connect? Thanks

Steven Harden says:

Will this make my vehicle idle high and not kick down???

DreadFamilyAdventures says:

hell yeah man love that good ole american muscle!

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