I own a 2001 Pontiac Grand Am and there is a reset button in the drivers side fuse box.
Depress the button while the key is in the "On" position until the "change oil" light blinks. Release and press again until you hear the chime. The light will go out. Pumping the accelerator pedal as described in other posts only made my car idle extremely high. Light did not go out that way and had to adjust idle.