How do you reset computer on Pontiac grand prix se?

To reset the computer on a Pontiac Grand Prix SE, you can disconnect the negative battery cable for about 10-15 minutes. This will clear any stored trouble codes and reset the computer. Afterward, reconnect the battery cable and start the vehicle, allowing it to idle for a few minutes to recalibrate the system. If you have specific error codes, it's advisable to address those issues first before resetting.