i just got the trans working right now its messed up again.. ok i have a 4l60e build to handle more than my power.. i also have a pt4000 converter.. i have no over drive and first dont work eighter.. if you manually pull it down into first it will work just fine.. it started acting up after i raced a vette. man it left hard lol.

 

also the converter dont lock no more.

 

i got it fixed. it keeps putting the trans in safe mode. how can you keep that from happing.

 

remove the test for the code po757 from tuning its a common issue with a high stall. information about it is in the stickies and a couple hundred other places in the forum. look at the stickies at top in one of the threads it tell how to do this with hp tuners