Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE1998AURORA V8-4.0L VIN CREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIREEPROM DATA FOLLOWING PCM REPLACEMENT
1998 Oldsmobile Aurora V8-4.0L VIN C
EEPROM Data Following PCM Replacement
1998 Oldsmobile Aurora V8-4.0L VIN CSECTION EEPROM Data Following PCM Replacement
Procedures Following PCM Replacement
Since the data contained in the EEPROM is specific to the vehicle that the PCM is in, the EEPROM should reset if the PCM is installed in another vehicle.
When this reset occurs, the following data will be erased or reset
^ TP sensor learn
^ Transaxle adapts (shifts, steady state, and garage shifts)
^ Transaxle oil life
^ Engine oil life
^ PCM odometer reading.
Resetting transaxle oil life will trigger the Change Trans Fluid message. Resetting engine oil life will trigger the Change Engine Oil Now message. The TP sensor learn can be relearned by ensuring the throttle is closed and turning the ignition ON for 30 seconds. Do not move the throttle or brake pedals during the TP learn. The transaxle oil life may be reset using the transaxle oil life override or it may automatically reset to 100 depending on the vehicle. The engine oil life may be reset to 100 by displaying the Oil life left and pressing the Reset button. Engine oil life may be reset to near it's previous value with a scan tool. The transaxle adapts will be relearned during normal operation. The PCMs learned odometer reading must be reset with a scan tool on vehicles without a smart (serial data equipped) Instrument Panel (IP). Smart IPs communicate their odometer value to the PCM at ignition ON.
Since the data contained in the EEPROM is specific to the vehicle that the PCM is in, the EEPROM should reset if the PCM is installed in another vehicle.
When this reset occurs, the following data will be erased or reset
^ TP sensor learn
^ Transaxle adapts (shifts, steady state, and garage shifts)
^ Transaxle oil life
^ Engine oil life
^ PCM odometer reading.
Resetting transaxle oil life will trigger the Change Trans Fluid message. Resetting engine oil life will trigger the Change Engine Oil Now message. The TP sensor learn can be relearned by ensuring the throttle is closed and turning the ignition ON for 30 seconds. Do not move the throttle or brake pedals during the TP learn. The transaxle oil life may be reset using the transaxle oil life override or it may automatically reset to 100 depending on the vehicle. The engine oil life may be reset to 100 by displaying the Oil life left and pressing the Reset button. Engine oil life may be reset to near it's previous value with a scan tool. The transaxle adapts will be relearned during normal operation. The PCMs learned odometer reading must be reset with a scan tool on vehicles without a smart (serial data equipped) Instrument Panel (IP). Smart IPs communicate their odometer value to the PCM at ignition ON.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.