Ok Guys here is my delema.I keep throwing code # PO740 TCC circuit or something like that?I was told I had a bad Lock Up solenoid.I want to replace it,So where in the Tranny is it?How much does this part Cost?Please help!!!
TIA
Scott

 

Scott,
It is in your valvebody, in/under the trans pan. I noticed you have the transgo installed. Did you do the install? Or did a shop? The TCC solenoid is attached to the main wiring harness in the valve body. Could be bad or just not seated properly or the wiring could be messed up. More info...

 

Hey Doc
I had the shop do it about 3 years agoSo I dont know if I got a bad connection?I wonder if the wiring is messed up?If I pull the Pan will I see it?

TIA

 

This is a problem I have had ever since I went to a 3200 Vig converter it has just got worse ,since my cam install....But I can make it lock back up with my lock up switch if the computer makes it unlock....

 

The TCC apply solenoid is NOT in the valve body.. It's the yellowish one that plugs into the pump.. It's the one closest to the converter..

 

Its part of the harness inside of the trans. When it says TCC circuit doesnt neccesarly mean its the solenoid itself.Could be harness inside or outside of trans. Connectors or even PCM. Should check ohms before changing.