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    GM module communications explained

    LB7 - 2001 vs. 2004 - electronics Hello Ben, First of all, thank you for your write up. You've indicated that the 01-02 trucks have quite a different electronic set up than the 03-07's. I am in the process of installing a 2001 LB7 engine into my 2004 GMC (which came with an LB7...
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    2001 LB7 into 2004 GMC (LB7) - Electronics?

    My 2004 GMC LB7 went south, so I'm in the process of installing a 2001 Chevy LB7 into my 2004 GMC. I'm assuming I can just drop this in. However, I had read that the electronics are different between a 2001 and a 2004. What electronics, etc. do I need to swap over to make this engine run in my...
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