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International Automotive Technicians Network
Re: GMC Acadia ECM fuse
Posted to Technical Discussion Forum on 11/3/2020

This fuse is the power feed IN too the ECM. The problem is on the power feed OUT of the PCM. Check the circuits powered by the PCM.

An injector harness rub through is possible. A "wiggle test" is typically used to find an intermittent open circuit.

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