Clearing Diagnostic Trouble Codes

Stored trouble codes in the Electronic Control Module (ECM) memory can be cleared by removing battery voltage from the ECM. To do this, disconnect the ECM harness from positive battery pigtail for ten seconds with ignition off. Trouble codes should be cleared after any repairs have been performed.
After the ECM memory has been cleared, a change may be noted in vehicle performance. To restore the vehicle to normal, drive with engine at normal operating temperature at part throttle with moderate acceleration and idle conditions until normal performance is restored.