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Difference Between PCMs

Confusingboat

Confusingboat

New member
So I've been thinking a lot about the PCMs used in various recent GM vehicles and what the differences really are. Most specifically I'm referring to 04+ Grand Prixs (v6) and 2008 G6 GXPs. Are they for the most part identical with different software? How much does the hardware/software differ from one another?
 


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