Just did my 4l80e swap and these codes come up p0758,p0753,p1860, the tranny goes into 2nd gear only and it wont shift. Anybody know what could be wrong?

BTW i followed the 4l60e to 4l80e swap tutorial

 

WHat stall.? I would double check the connecters, you wired the other speed sensor as well? to the right connectors?

What are those codes> i recognize one of them is a solenoid code IIRC

 

stock stall and yes i wired pin 22 and 23 to the speed sensor

 

this happened to me the trans is in limp mode... it only goes in 2nd and reverse.... those codes are solenoid codes... read my thread....https://www.performancetrucks.net/fo...d.php?t=458438

i had a pin pushed back in the adapter harness from speartech.. i would check the pins on the main trans plug... did you do the adapter or pin it yourself.. id start there... pretty much you dont have power for the solenoids to work

 

Sounds like you do not have power to the trans. As others said go over your connections. Also do you have the 4l80e program in your computer.

 

ill check the connector later on today because i did splice the brown and white wires. i do have the 4l80e segment in the tune

 

it looks like i have power to the selenoids, pins on the round connector look good. i spliced the white and brown wires and soldered the brown where the white was, its on pin "s". if i had a 4l60e Tune would the tranny go into gear? i flashed a stock 2003 6.0 4l80e tune. anything else to look for?

 

Update!! turned out that my truck did not have the IGN 0 fuse. I just put a 15 in there and the tranny shifts fine!! DTC's gone

 

Sweet that was what i was gonna tell you to check next... i wonder why you didnt have one in there... was your truck a manual trans??? i bet you were pumped when you finally got it going... mine did that after a couple hundred miles.. so i was really freaked out... haha... how you liking the 80e??