To find it, you'll need to:
1. Locate the radiator: It's the large metal component in the front of the engine compartment.
2. Look at the bottom of the radiator: The drain plug is usually a small, hexagonal or square-shaped plug. It might be covered in some grime.
3. Check your owner's manual: This is the best way to get the exact location for your specific year and model Malibu. The manual will have diagrams and precise instructions.
If you can't find it using these steps, a quick online search using "Chevy Malibu [Year] radiator drain plug location" should bring up pictures and videos. Remember to be careful when working under the hood of your car, and always let the engine cool completely before attempting any maintenance.