Where are the core plugs on a GM 2.2L Ecotec engine?

On a GM 2.2L Ecotec engine, the core plugs, also known as freeze plugs, are typically located on the sides of the engine block. There are usually two or three plugs on each side, positioned in the casting holes of the engine block. Their primary function is to prevent coolant from freezing and to allow for drainage during manufacturing or maintenance. It's important to inspect these plugs for any signs of corrosion or leaks over time.