How do you reset the check engine light for a 2004 grand prix gt Pumping the gas pedal did not work?

Pumping the gas pedal only resets the oil change light. Take your car to autozone and have them scan it for the codes. They will then tell you what is making the light come on. Usually bad oxygen sensors will do this but let autozone tell you. If nothing shows up then they can wipe the codes clean and your light will go off. By the way autozone will scan it for free.