Hi community.

Donor vehicle is a 2018 C7 LT1 8L90 (ECM OS 12688228) I?m on the process of reworking the stock harness for a swap and I have some questions.

I?m converting the wiring to pair the LT1 with a 6L90e. Think I have whole wiring covered but, will I have to change something on the ECM to get the ECM and TCM working together?

I?ll be using a camaro SS electric fan. On the camaro, the PWM signal is out of ECM X1 54, but on the corvette wiring this pin is not used. Will it work on that pin? (I'm still wondering how the corvette controls the fan )

I?m also having ECM X1 pin 23 (unknown) black with yellow stripe unhooked. I?m trying to pay for an ACDelcoTDS licence like 3-4 days ago, but all my credit cards are being declined. Called the bank and it looks like website issues.

Can anyone please share the ECM connectors pinout?