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Lm7 p59 pcm pinout

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Hi guys, I have been trying to hook my WB up for a week now, and could use some help. My lm7 doesnt have a CAN Bus, and the AEM WB I ordered, requires it. I have heard that I can tap into my egr pin, on the pcm( since my vehicle doesnt have egr). Trying to find out what exact pin number it is. It's on an 05 avalanche 5.3 4x4. P59 pcm.

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