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4l80-e Tcc Valve Mod

Will L.

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Walk me threw please, what happens now and how does this help that makes it worth it? Specific uses? What draw backs?


I always was able to find a transmission magician and write a check. Always got great results, so I never followed details.

Also, teach me to use “through” instead of past tense of throwing a ball. Haha wife gets made every time I write “thru”
 

6.2 turbo

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The tcc solenoid inputs varible psi at the front of the valve. At the back of the valve is a spring,and return oil psi trying to push it shut. Its actually a pressure regulator.
 

6.2 turbo

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It will cause a firmer engagement of the tcc. The first trans I did this to, the tcc was on a toggle switch. This one is a 06 Duramax van,with stock tunning. I do my own tunning, so if there is any issues I can probably correct it.
 

THEFERMANATOR

FRANKENBURBAN
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It goes back to an on off converter lockup like the 700r4 and 1st 4l60e's had. I do not reccomend this with a triple disc converter or any converter with a HD clutch. I would also think this would stress the already weak lockup piston increasing the chance of it cracking(which is a known issue stock).
 

6.2 turbo

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Don't know about a triple disc , but it has worked fine on a stock converter,and one with a billet piston.
 
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