To find it precisely:
1. Identify your engine: Check your vehicle's paperwork or the engine bay for the engine code (it's usually stamped on a metal plate). Knowing the engine type will significantly narrow down the possibilities.
2. Consult a repair manual: A repair manual specific to your year and engine will have diagrams showing the exact location of all sensors, including the CMP sensor. This is the most reliable method. You can find these manuals online or at auto parts stores.
3. Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to select your vehicle's year, make, model, and engine, and then view diagrams showing the sensor locations.
Without knowing the specific engine in your 2000 Chevy Malibu, I cannot give you a more precise location. Refer to the resources mentioned above to find the correct location for your particular vehicle.