B101e security not programmed

My #150th

2016 Malibu Limited

After ECM tuning has theft light

B101E security code not programmed

Even back to stock with GM dealer toys :( still same light

Please help

Do I need a new ECM

Which ECM type is that model using?
It is not an issue I have heard of before.

E39a

Anything out of the ordinary with tuning it? Was it locked after tuning?

No it was and is fine except for the code and associated light after tuning first time with EFILive.

Have you done that specific model before?
If you have the GM tools then maybe try a theft relearn.

Will do that in a couple hours. Hope it will help as the BCM is setting a code saying security code not programmed in ECM. First time with this particular model but it was just a simple Calibration Flash that caused it. Even tried full flashing after to no avail.

Currently doing immobilizer learn at a dealer this moment

Update: seems to have fixed it. Thank you for the attention and helping me out with this Ross. I will report later to confirm it's still good

Yup works great :)

Thanks, still very odd that it lost that data after a flash. That area of the ECM is never modified during a reflash.