VIPERSLYR

Just finished my 4l80 swap in my 99 formula using speartech harness t-56 to 4l80. The trans shifts real nice and going threw all gears but am getting code p0717 has any body else had this code come up after swap. TIA

DopeFedZ

iTrader: (34)

Do you have the iss harness plugged into the right sensor on the side of the transmission? I believe there are two sensors on the driver side. I don't remember if it's the one closest to the motor or furthest that the harness gets plugged into.

Firebirdmuscle

iTrader: (16)

Iss is in the front and vss is the plug in the rear. You just reuse the original vss plug, but should have added in the iss into the pcm. But to answer your question man, i didn't have any codes when I swapped mine.