how to reset the check engine and change oil soon light on 2004 Buick LeSabre

as soon as the change oill soon light came on i changed the oil and then the check engine light came on , the change oil light and the check engine light are still on , how do i reset it

Asked by for the 2004 Buick LeSabre
Change oil light i believe this is the procedure. turn ignition on engine off within 5 seconds step on accelerator 3 times quickly. light should blink and go out. if that doesn't work try doing it 5 times quickly.