Liek the title says I just got done putting my truck back together and at idle in park. I did a 4l80e swap wondering would the tune have anything to do with this or bad speed sensor or something? Anyone?

 

anyone?

 

Did you recalibrate your tune so that it knows there is a 4L80e?

 

yup I had nelsons do my pcm. I didnt know if maybe it be a bad speed sensor or maybe the two pins I plugged in to the pcm for the trans maybe loose or something. i was looking for ideas before i started taking things apart and or spending money on something i didnt have too.