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Home >> GMC >> 2005 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls - 6.6L (Introduction)) >> Description and Operation >> Engine Control Module (ECM) Description >> Notes
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Engine Control Module (ECM) Description: Notes

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The engine control module (ECM) processes the various input information. The ECM sends the necessary electrical responses to control fuel delivery.

The input information has an interrelation to more than one output. One failed input can affect more than one systems operation.