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Home >> GMC >> 2004 >> Sierra 2500, 4D Pickup Extra Cab, LQ4, Part Time >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls - 8.1L (Introduction)) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Notes
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Powertrain Control Module (PCM) Replacement: Notes

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Service of the powertrain control module (PCM) should consist of either replacement of the PCM or programming of the electrically erasable programmable read only memory (EEPROM). If the diagnostic procedures call for the PCM to be replaced, the replacement PCM should be checked to ensure that the correct part is being used. If the correct part is being used, remove the faulty PCM and install the new service PCM.

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