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Home >> GMC >> 2003 >> Sierra 2500 HD, 4D Pickup Extra Cab, 6.6 1, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self Diagnostics - 6.6L >> Programming >> Engine Control Module >> Notes

Engine Control Module: Notes

NOTE: Service of the ECM should normally consist of either replacement of the ECM or EEPROM programming. If the diagnostic procedures call for the ECM to be replaced, the ECM should be checked first to see if it is the correct part. If it is, remove the faulty ECM and install the new service ECM. The service ECM EEPROM will not be programmed. DTC P0601 and P0602 indicates the EEPROM is not programmed or has malfunctioned.
NOTE: Programing Engine Control Module requires a compatible scan tool and a Techline® terminal. Procedure uses a Tech 2® scan tool.
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