Originally Posted by BenHartshorn
About the code the 6L80E trigers?, witht he car running, delete codes, it works normal?, if you restart car/truck the code returns?,,
In the Black connector, pin59, yellow, pcm outputs ground on this pin,,
RELAY:
PIN 30------12v
PIN 87------ To the Pink ignition wire that goes to the TCM.
PIN 85------12v
PIN 86------this one goes to the ECM black connector PIN 59..
When you turn off the car/truck, ecm will turn off before tcm, it should fix your code, let me know