Key relearn/ No Security light on?

Yes, that is possible the ignition switch could be inhibiting the relearn. Can I ask if you had the new ECM programmed before you installed it? If not, this could be why the system is not working. Here is a guide to help you see what I am talking about, you can get a preprogrammed unit by searching Google or Ebay.

Here is how to change out the ignition switch and instructions on how to replace the ECM correctly. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

I got the ECM new with programming on it. Programmed to my VIN and last ECM I had. The security light isn’t staying on like it’s supposed to but also my Ignition lock cylinder gets jammed up and is hard to turn sometimes.

Yep, the ignition switch can cause the problem are having did you get a chance to change it out?

I haven’t had the chance to change it out yet with a new one. I’ve heard yes and no on it fixing the issue. I’ve also heard that a new key would fix the problem with it jamming up like it does. I also heard that as long as the key turns to the on position then the relearn process should work but the main problem is the security light/theft deterrent isn’t coming on like it’s supposed to. If it’d come on, I’m sure the key relearn process would work.

That is true, but if the ignition switch is coming apart it can cause the key lock to jam and not supply power correctly as well. But I think we should do a CAN scan; you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a guide to help:

https://youtu.be/u-4syLc-ifQ

Please go over these guides and get back to us. It could be the BCM is not working, and the CAN scan will detect that.