Can anyone tell me how to reset the change motor oil warning light on a 2003 Monte Carlo?

 

Try some search functions, it's been covered plenty of times. If you have your manual it's in there.

If not turn the car on, the radio off, hold DISP (bottom ***, for radio tuning) about 10 seconds

then use the right arrow / 2 next button to scroll through options and disp button to select.

 

There's another way too but I can't tell you off the top of my head. I think you turn the key to on and then depress the accelerater 3 times - I think.
But anyway, here's a link to owner's manuals you can download http://www.ebookspdf.com/automotives...owners-manual/