reset check engine light at home without mechanic computer on a 2001 pontiac grand am ( 4 cylinder)
You can try taking the battery cables off and touching them together for 1 minute (this can cause idle problems until it relearns itself and the radio to lock so be sure there is no security code in the radio first), if that does not work and it does not in some cases you will have to get it cleared using a scan tool, many auto parts stores will read the codes and clear them at no cost to you.