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How to trick or eliminate codes in a bcm after ecm swap?

Bobby Brown
Bobby Brown
in GM Discussion Forum

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#1

Hey guys recently swapped a 2016 Silverado 4wd from a v6 to a v8 using a 2017 ecm with vats turned off with HPTuners.  Truck runs fine but a get a code B3902 and my theft lock light is staying on in the instrument cluster.  Is there any way to get that turned off?  In HPTuners I do not see any way to make that dtc not report since its on the body control side of the system.  Any help is greatly appreciated

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    • GM Car Hacking Expert
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    #2

    Need custom coding to match security

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    • GM Car Hacking Expert
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    #4

    I can, but have no time as isn’t few clicks job

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    • 3 weeks later...
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    #5

    sounds like you need to change the pcm data to match the bcm. and then sync them. requires an eeprom editor and posssibly TLC. Ive not directly swapped in a pcm before, but i've done some other parts.

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