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Home >> GMC >> 1998 >> Forward Control 5.7 R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 242 (Engine Controls - Removal & Installation) >> Computerized Engine Controls >> Electrically Erasable Programmable Read-Only Memory
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Electrically Erasable Programmable Read-Only Memory

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

The Electrically Erasable Programmable Read-Only Memory (EEPROM) is a permanent memory that is part of PCM. EEPROM cannot be replaced. EEPROM contains program and calibration information that PCM uses to control powertrain. If PCM is replaced, ensure NEW PCM software/calibration is correct and most recent version for vehicle. EEPROM must be programmed when NEW PCM is installed. Program EEPROM using latest software for that specific vehicle. See PROGRAMMING  .

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