Electronically Erasable Programmable Read Only Memory Programming
WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- If Powertrain Control Module (PCM) was replaced, Electronically Erasable Programmable Read Only Memory (EEPROM) in PCM must be programmed. If EEPROM is not programmed, a Diagnostic Trouble Code (DTC) will be set in PCM.
- Ensure battery is fully charged. If battery is being charged, ensure battery charger is disconnected before performing EEPROM programming procedure.
- Ensure scan tool is properly connected on Data Link Connector (DLC). Turn ignition switch to RUN position. Perform EEPROM programming using Techline® equipment manufacturer's instructions and latest software applicable for vehicle model.
- Once EEPROM is reprogrammed, perform powertrain On-Board Diagnostic (OBD) system check. See POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Ensure engine is idling for one minute before checking for DTCs when performing powertrain OBD system check. After EEPROM is reprogrammed, proper Crankshaft Position (CKP) sensor variation learn procedure must be performed. For 3.4L, see CRANKSHAFT POSITION (CKP) SENSOR VARIATION LEARN PROCEDURE (3.4L). For 3.8L, see CRANKSHAFT POSITION (CKP) SENSOR VARIATION LEARN PROCEDURE (3.8L).NOTE: If EEPROM programming fails, ensure all electrical connections on PCM are okay. Check Techline® for latest software. If EEPROM programming still fails, replace PCM.