The 2009 Chevy Malibu doesn't have a traditional "oil life" system that's reset with a button or menu like some newer cars. Instead, it relies on a fixed mileage interval for oil changes (usually around 3,000-5,000 miles, depending on driving conditions and the owner's manual). There's no digital indicator to reset.
To "reset" your oil change reminder, you simply need to change your oil at the recommended interval and then mentally note (or record in your car's logbook) when you did it. That's your "reset." There is no electronic system to manipulate.
