is there an easy way to disable lockup function of the torque converter?
maybe somthing with brake switch.

There are ways to do this but without a tuner you are going to throw trouble codes and some of them will cause the trans to go into limp mode and have max line pressure. Why would you want to dissable TCC?

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4T65E Transmission Info
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To the orginaly poster. If you have no tuner there is a plug in the front of the trans near the top of the case on the side were the exhaust cross over is it should be a round plug plugging into the trans pull it and lock up is shut down and no codes will be tripped. Because tkere will be no power going to the tcc switch.

To the orginaly poster. If you have no tuner there is a plug in the front of the trans near the top of the case on the side were the exhaust cross over is it should be a round plug plugging into the trans pull it and lock up is shut down and no codes will be tripped. Because tkere will be no power going to the tcc switch. thats the cheap way to do it if your in a fix...

What are you talking about????



Above is the ONLY connector that goes inside a 4T65E and clearly if you disconnect this you lose everything, and it WILL throw codes, OBD2 systems throw codes for ANY transmission electrical problem. If the TCC switch in the transmission doesnt switch when the solenoid is commanded a code throws. If the solenoid isnt hooked up a voltage or short to ground code throws. When TCC slippage is over 250rpm for a certain time when commanded a code throws.

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4T65E Transmission Info
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what in the world are you talking about? if you unplug that round plug, the trans wont do jack! you need to watch what you are telling people, man

look at the connector list in that... you are confused my friend!

i have a shift kit and trans interceptor to increase line pressure, and when ever it goes in to lockup there is an annoying jarring type shudder, but i am very pleased with the rest of the shifts.

i am not worried about gas mileage.
thanks trannyman in advance

Joe Gancos

imho, that just sounds like trouble waiting to happen

i have been running this set up for 4 years, i just dont like the lockup even when new.

I REALLY try to be patient with people, particularly in this kind of environment where you have the multitude of backgrounds, personalities and so forth. And I try to play nice. I even try to put myself in the other persons shoes hoping to see things from a perspective I may give little consideration to.

But dude, Ive tried to look at it from different angles trying to figure out WHY in the world you would tell someone to disconnect the ONLY electrical plug to an ELECTRONICALLY controlled transmission. A transmission that DEPENDS on signals from the pcm to work properly as a complete system, not just TCC Lockup.

I dont know exactly what thought process you used, but it was a run away train that derailed in a metropolitan area and I certainly would appreciate if you would give serious thought to what you are about to post with respect to such advice.

I'll stop there because I am just about to boil over and I prefer to refrain from making you target practice.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!