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  1. C

    ECM fuse popping.

    No, but I will check it out - I downloaded the one off the GMC site for 3rd party / aftermarket installers...
  2. C

    ECM fuse popping.

    So it is the middle ECM harness (not blue, not grey, the black one) - I've tried to find the wiring for that module in the diagram. Not having much luck, the wiring doc is 1295 pages haha. Eventually I'll find it I suppose - does anyone know off hand what I could connect? I read from the...
  3. C

    ECM fuse popping.

    Hey everyone, I have a 2015 GMC Yukon 5.3 SE - I have been getting a blown 30Amp ECM fuse every time I turn the ignition on. There are three connectors to the ECM. If I disconnect those, insert a new fuse, and turn the vehicle ignition to ON, the fuse does not blow. Does this sound...

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