TRNW-2: Chevy Active Fuel Management Killing 6L80's?

[Brett Karulak]

Shudders on 6Ls, if its not obvious why it happening, here is my own tips.
I will add shudder fix to use as a diagnostic tool, if it changes the
characteristics of the shudder  then typically you have internal trans
problems, unless it goes away you might have a fluid issue.
Have a brand new OE mass air flow sensor to install as a  test tool and
test drive and see what happens.  Those things affect these transmissions
too.
Buy a cheap AFM delete off amazon and test drive and see what happens, this
might show you have bad engine mount or mounts or someone installed
aftermarket mounts, only use OE engine mounts if the AFM system is still
active.
If all your valve pertaining to lock up pull good vacuum, and everything
else is good, you might have a bad tehcm, I keep them in stock but only
replace them if i have, no 6l i do gets a tehcm unless its the bad ones
from 2017.
hope this helps
Brett Karulak
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