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QUESTION:
2003 Duramax superduty silverado code 370 no start. Tests keep showing injector control module bad. Replaced module twice. Starts with new module for a short time then quits and goes back to code 370 again. Already Tried: performed all tests for code 370. tests all pass and tree indicates ficm is bad

ANSWER:
There must be a wiring or connection problem if the FICM is only fixing the issue for a second. Are the FICM’s you have already replaced damaged as a result of this? Is there a chip or performance programming on this truck? If so, remove it or return the setting to stock for testing.

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