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Discussion Starter #1
Is this a PCM problem and where can I get a good replacement if needed. Only part# I can see on the PCM is VDH4?
 

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Im not sure the problem exactly, but I believe a 0603 code is the KAM memory code, from my understanding, if you every time you tune the truck it will throw this code. Did you recently install new tunes?
 

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It is Keep Alive Memory and usually happens when the batteries are disconnected or the PCM looses power.
 
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