With a scan tool
WARNING: This page is about a different car, the 2001 Pontiac Bonneville and 2000 Pontiac Bonneville. However, it is still accessible from the selected car via links, so may be relevant.
Connect scan tool and turn ignition on. Use scan tool to select INSTRUMENT PANEL CONTROL MODULE. Select SPECIAL FUNCTIONS and MISCELLANEOUS TEST and RECALIBRATE ALL MOTORS. Select ON and wait 30 seconds. All counts will display zero and slowly scan tool will begin to show counts.