Clearing Diagnostic Trouble Codes (DTCS)
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
To clear DTCs from memory, use scan tool, following scan tool manufacturer's instructions. Codes may also be cleared by disconnecting power supply to PCM for at least 30 seconds.