Work-around for the dreaded FE03 Security Code Function Locked IMMO relearn failure?

2015 Silverado K1500 5.3L gas.  Factory ECM has a faulty sensor input, but otherwise runs fine.  Got a used replacement ECM from a junkyard, changed the VIN on it to match the truck, and programmed it using SPS2 - that all went fine. Tried to perform the IMMO (immobilizer) relearn.  Got thru the 12 minute countdown, then a FE03 Security Code Function Locked in the ECM error message pops up.

All the research I've done points to the issue being the fact that once a GM ECM of this era is IMMO learned to a vehicle, it cannot be unlearned from that vehicle and installed into another one.

Surely, there has to be a work-around.  Can the GM DPS Development engineering software wipe out the learned IMMO information in a used ECM to make it ready for use in another vehicle?  Or does anyone know of another work-around to solve this issue?

I can disable VATS in a custom tune of the ECM which will allow the engine to run and the vehicle to be driven.  However, this disables the factory remote start function due to a IMMO mismatch error which still occurs (as seen in the scan data).

I can do it remotely if you have j2534

I can do it remotely if you have j2534

Yes, I have a J2534 (GM MDI2). Can you explain the procedure you would do?

Pm me

Sorry, diaao, I don't let just anyone "remote in" to my PC. Why can't you just explain to me how to do it? There has to be a way to wipe the learned security password in the ECM. They do it when they remanufacture them...

Used Global A cant be programmed using standard OEM tools . You need to clone eeprom (emulated ), or to virgin eeprom. You can use IO terminal or other devices like fc200 or obdstar.
I have custom software to clone eeprom which I can do eeprom cloning remotely.

2015 Silverado K1500 5.3L汽油。工厂 ECM 的传感器输入有故障，但其他方面运行良好。从垃圾场买了一个用过的替换 ECM，更改了它上面的 VIN 以匹配卡车，并使用 SPS2 对其进行编程 - 一切顺利。已尝试执行IMMO（防盗器）重新学习。经过 12 分钟的倒计时，会弹出 FE03 Security Code Function Locked in the ECM 错误消息。

我所做的所有研究都指出了这样一个事实，即一旦这个时代的通用汽车ECM被IMMO学会了，它就不能从那辆车上学到并安装到另一辆车上。

当然，必须有一个解决方法。GM DPS Development 工程软件能否清除二手 ECM 中学习到的 IMMO 信息，使其准备好用于另一辆车？或者有谁知道解决此问题的另一种解决方法？

我可以在 ECM 的自定义调整中禁用 VATS，这将允许发动机运行和驾驶车辆。但是，由于仍然发生 IMMO 不匹配错误（如扫描数据所示），这会禁用出厂远程启动功能。

使用 DPS 拆解旧控制器密码并重新启动 SPS2

Use DPS to disassemble the old controller password and restart SPS2

Are you saying to just use DPS to change the PIN or disable the PIN?  I understand how to change it, but wondering if there is a way to reset it

you need the immo code from the ecm to unlock it. then it can be reset/relearned. A bin dump will have the immo code for the ecm in it.