The ignition key turn all the way back, stuck?

My key will not turn all the way off and I brought it from dealer with metal key. Now it is not reading anything and will not start or turn off lights in car. I really do not know what to do. I do not nor never had the original key? The key will not turn?

The key is stuck in the ignition and wont come out its in park and shut off and have tried to move it and try again and still nothing

Yea it still startand everything just wont come out lol

Didnt work and none of the light on the shifter coloum work

My key is stuck in the ignition and won't come out. The message is that starter disabled, remove key.
I have tried to unplug the battery cables to reset the computer and that has not worked

Hello, please help! I go crazy with my car. I leave in Europe (Georgia, Tbilisi) and we don't have Cadillac dealer, so I only can write you. My problem is: key stuck in ignition, service theft system message, fuel gauge not work, parking position light not work in this time. I can only start engine from starter relay manually (i remove starter relay and start engine from there). I ordered re-manufactured and programmed ECM, but I cannot do key relearn procedure. Seems like I lost something between Keys Off and On Position. Can you please help me?

Dear Ken, Thank you very much for fast answer! OMG, i think i also thought about something like this. because, my car have some noise when i shift to parking position. Please explain to me, where is this located? With diagram i do not understand, where it is. is it under gear shifter? or under the car? do you mean maybe transmission linkage like in this video? https://youtu.be/hmLBPin6ggw i am not professional mechanic, but i know many things and hope to fix it myself. So, please, explain me little bit more detailed, what i have to adjust or replace. Thank you in advance! i am big Cadillac fan, but unfortunately we don't have official dealer service in Tbilisi, so i cannot do anything.

Dear Ken, Thank you very much for helping me. I think, you are my last hope :-) because, everyone was saying ECM, TCM, low voltage, etc. Only you say to me about and after your message I start to think about this noise and this thing. I have now video, I hope it uploads here, when not I will upload it on YouTube to show you everything. Important thing: this happens not exactly every time. For example, yesterday I was trying to shoot video, but car started normally with the key :-)) funny, but true. And after car starts normally, it needs some time, some hours, for problem come back. Today car was not starting and finally I have video now and I will upload it now here. P.S. After starting from starter relay I have two error codes: U0100 (Network) and P0700 (Transmission Control System MIL Request). P0700 is not every time, only sometimes. Hope, this video and my comments helps you to help me. So, can it be Shifter adjustment, what I need for fix this problem? As you know, I do not leave in USA, I am in Europe (Georgia) and we don't have here official Cadillac service. Thank you so much for helping me. Wait for your answer.

Dear Ken, no, there is no corrosion at the PCM. Connectors are also okay. We also tried install a new, programmed ECM but key relearn procedure can not be done. But with old ECM sometimes is everything okay. Sometimes Car starts absolutely normally! Did you see my video? One day ago car has started normally with key. Do you think after this video about shifter adjustment? Or no more? I think also about this detail under the steering wheel (please, see Photo, I don't know name of this part). Because, when I try to start and car can not start with the key, sometimes this detail is heated! Or maybe my key is damaged (please, see also key photo).