The Pontiac Grand Am is a mid-size size (and later compact) car produced by Pontiac. The 1999-2005 generation is the final generation of the Pontiac Grand Am.
Turn the ignition to ON, with the engine off. Fully press and release the accelerator pedal slowly 3 times within 5 seconds. The reset is complete when you hear the chimes and the CHANGE OIL light goes out.