Clearing Diagnostic Trouble Codes
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Trouble Codes (DTCs) are cleared using a scan tool. After repairs are made, clear DTCs following scan tool manufacturer's instructions. If a scan tool is not available, DTCs are automatically cleared from memory after 100 drive cycles if no faults are present. A drive cycle occurs each time vehicle is started, then driven at a speed greater than 10 MPH.