B101e security not programmed

[Boost]

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

[GMPX]

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

[Boost]

E39a

[GMPX]

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

[Boost]

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

[GMPX]

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

[Boost]

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.

[Boost]

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

[Boost]

Yup works great :)

[GMPX]

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