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Re: 05 GMC 6500 7.2 CAT ECM replacement
Posted to HD/Fleet Forum on 12/6/2017 3 Replies

Update, turns out I didn't load the circuits 52 & 53 constant power well enough. After searching the archives someone mentioned that the headlight someone else and I was using wasn't enough of a load, and sure enough, with a bigger load no voltage so I just ne... Login to read more.

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