Question about Jeep Grand Cherokee

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Just replaced the pcm....didnt have it flashed yet but it starts perfectly idles for two seconds then shuts off

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  • GetMeOttaHere Sep 08, 2010

    Your gonna have this problem until you get it flashed.



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Your keys and key codes (sentry key) have not been programmed. You have a SKIM (sentry key immobilizer module) that reads the computer chip in your ignition key. The SKIM module and the PCM communicate together to verify that the correct key is being used in order to allow the engine to keep running. Basically, the new PCM does not yet know the security code data that is stored in the SKIM. You have to have a well-equipped repair shop or dealership program/reprogram/flash the new PCM and transfer the security data from the SKIM to your new PCM. Yes, it's a pain, but a necessary one in your case.

Hope this helps and good luck!

Posted on Sep 09, 2010


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