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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.4L - Introduction - Service & Replacement >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Notes
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Powertrain Control Module (PCM) Replacement: Notes

Service of the power control module (PCM) should normally consist of either replacement of the PCM or the electrically erasable programmable read only memory (EEPROM) programming. If the diagnostic procedures call for PCM replacement, inspect the PCM first to see if the PCM is the correct part. If the PCM is faulty, remove the PCM and install the new service PCM.

The new service PCM will not be programmed. You must program the new PCM. DTC P0602 indicates the EEPROM is not programmed or has malfunctioned.

There are no user serviceable parts in this PCM. The PCM should never be opened for any reason.

IMPORTANT: When replacing the production PCM with a service PCM (controller), it is important to transfer the broadcast code and production PCM number to the service PCM label. Do not record this information on the PCM cover. Transfer allows positive identification of PCM parts throughout the service life of the vehicle.
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