Reminder Light Reset Procedures

To clear diagnostic codes from ECM memory, the ECM power feed must be disconnected for at least 30 seconds. Depending on how the vehicles is equipped, the ECM power feed can be disconnected at the positive battery terminal "pigtail", the inline fuse holder that originates at the positive connection at the battery, or the ECM fuse in the fuse block.

The negative battery terminal may be disconnected to achieve the same result, however doing so will cause other on-board memory, such as radio preset to be lost.

After the computer memory has been cleared, a change may be noted in vehicle performance. To restore normal vehicle performance, drive with engine at normal operating temperature, with the accelerator pedal going through idle, part throttle, and moderate acceleration modes until normal performance is restored.