Immobilizer Learn

Shane Owner/Technician Tennessee Posted   Latest   Edited  
Resolved
Programming
2012 Chevrolet Cruze LT 1.4L (C LUJ) 6-spd (6T40) — 1G1PF5SC9C7121325
B3031
B3105
B101E
P0315 — Crankshaft Position System Variation Not Learned
P0633 — Immobilizer Key Not Programmed - ECM/PCM
Crank / No Start

Replaced ecm with new GM. Programed ecm and updated software in BCM. It seems the immobilizer will not learn. Following all the prompts on SPS. Tried learn for ecm then tried learn for ecm and bcm. Still get same codes. Have disconnected battery for 10 minutes also.

Any ideas?

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Nathan Owner/Technician
Colorado
Nathan
   

*edit sorry I didn't read that it was a new GM module. disregard. It's a global A module.

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Oscar Diagnostician
Virginia
Oscar
 

He said that he replaced it with a new GM

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Marti Owner/Technician
Michigan
Marti
 

If BCM has been updated/flashed, might hv keys been Erased?…and not be able to be added back in? I'm Thinking New/virgin key will add in….and get rid of b3031

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Timothy Owner/Technician
Wisconsin
Timothy
 

Well, the programming depends on whether it's push-button start, or bladed key. With the push button, you start with the vehicle OFF. With a Bladed key you start the session with the key in RUN. The B101E (depending on sub code) means that the BCM has not completed the programming and setup. The P0633 will go away once the engine cranks and runs. It is only a info flag and not a true…

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Shane Owner/Technician
Tennessee
Shane
 

It is bladed key. SPS gave message to program bcm due to software incompatible levels. Sorry don't remember exact wording.

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Hal Owner/Technician
Texas
Hal
 

I just did an ECM replacement on a 2013 Cruze this morning. Make sure you do the IMMO learn with the door closed and key on (If it is a keyed ignition). When complete, it will tell you to open and close the door. Key off, remove the key, and put it back in the ignition. Basically, follow the onscreen instruction to a “T”

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Shane Owner/Technician
Tennessee
Shane
 

Did it 2 times. Followed prompts.

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Bruce Owner/Technician
Texas
Bruce
 

P0633 will not go away until the engine starts. Can you read IMMO data and verify that the keys are programmed, if so then you have the proof that they key is not the issue. Be careful with trying the learn for BCM if only the ECM is changed. If you were to replace both ECM and BCM at the same time, new keys are required. Don't mess with BCM replacement option if that is not what was done. I…

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Shane Owner/Technician
Tennessee
Shane
 

PIDs Key Type: Master Primary Key status: Yes Immobilzer allows to start: Valid Total keys learned: 1 Number of key fobs in car: 0 Immobilzer security code programed: yes Immobilizer security code accepted: No Immobilizer security code lockout: No

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Shane Owner/Technician
Tennessee
Shane
 

You are correct. Coil pack was problem

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Raymond Mobile Technician
Michigan
Raymond
 

Hi Shane, I recently replaced a BCM in a 2014 cruze due to hazard lights and crazy stuff happening when I got the GM dealership NEW BCM I checked the package/box just to make sure no parts guessers tried it and fried it and hot glued the box and put it back in circulation. I programmed the BCM with SPS successfully, after I had a no crank, so I knew I had to do the immobilizer relearn, it was a…

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Michael Owner
Alabama
Michael
   

I got involved in something similar recently with a 2014 Sonic. Not exactly the same vehicle, I realize, but see if any of the attached looks familiar. Doing the BCM Immo Learn with Existing Transponder or Remote Key ultimately got it going again. I know you said you tried that, but maybe there's something in the attached that will help. This vehicle had a blade key.

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Nathan Owner/Technician
Michigan
Nathan
 

Is it a brand new key your trying to program in or the old key? The chip in the key (type46) locks to the vehicle and will not reprogram unless you have the original ecm and bcm shared secret which was probably changed once you got a new ecm.

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Shane Owner/Technician
Tennessee
Shane
 

Was trying old keys. Have 2 keys on order.

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Marco Owner/Technician
Indiana
Marco
 

Ran into this problem recently on a 14 impala but trying to program a bcm and previously a pcm on a different vehicle as well. Could not get key to program with either sps or a key programmer, even tried programming a new key with no success. I eventually had to resort to ask a buddy to read the eeprom from the old bcm with an eeprom reader and rewrite the data onto the new one and it worked for…

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Shane Owner/Technician
Tennessee
Shane Resolution
 

New keys did not solve problem. Cleared all codes again and got just the 633. Going on what Bruce Aliff said I installed new coil pack assy and engine started. So, where did my diag go wrong. First, going by SI for the code is wrong in this case. Second, I never unplug connectors to test or try not to. I had originally scoped at coil pack module and had no signal. I imagine the signal from ECM…

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Interesting
Timothy Owner/Technician
Wisconsin
Timothy
 

As I stated far earlier in this thread, the P0633 sets as a flag, it is NOT a code. Basically it is telling you that theft programmed correctly, and will ‘complete’ when the engine starts. P0633 is not an indicator of a theft issue, merely that the engine has not started since theft was ‘learned’. As I also stated, if the engine is made to run (the no-start is eliminated) the flag will…

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