Quote Originally Posted by BenHartshorn
I saw your post "solution for p2534". Can you give me some guidance on what pin 58 supposed to be used for in the factory harness? I'm working with a 07 5.3 and 6l80e. I'm not sure which ground wire to use from the 07 5.3 harness for the relay. Thanks for your help.


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