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GMC IPC PROGRAMMING HELP

Al Buen
+Al Buen
in GM Discussion Forum

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#1

Hello, I have a 2020 GMC Sierra IPC that i purchased used.   I didn't get the old vin when I bought it.  When I connected to truck I was not able to pull vin through GDS2 it was all yyyyyyyyy.   IPC works but it just has bunch of messages from RPO's that are not on this truck.  It does say program cluster on one of the error messages displayed on cluster.  I tried to program and of course it doesn't let me.  I  changed the vin for IPC to match truck hoping to allow me to at least program but no it didn't.   I would also buy the pin change file since i know the current pin for truck but I don't think i will be able to since I don't know old pin or vin. 

 

Does anyone here know any other tricks on how I can retrieve old pin or force new pin program.  

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    #2

    One method is disassembling the IPC, reading and programming the PIN in the IPC EPROM chip.

    Example here.

     

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    • Contributor
    #3

    You can read calibration of IPC by DPS, and compare to find VIN. PM me !

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