Where is the knock sensor on Chevrolet Malibu 2003?

The knock sensor on a 2003 Chevrolet Malibu is located on the engine block, near the cylinder head, typically on the passenger side (right side) of the engine. However, the exact location can vary slightly depending on the engine (3.1L V6, 3.5L V6, or 2.2L 4-cylinder).

To find it precisely, you'll need to:

* Consult a repair manual: A repair manual specific to your 2003 Malibu's engine will show the exact location with a diagram.

* Use a diagram: Online sources such as auto parts websites (like AutoZone, Advance Auto Parts, etc.) often have diagrams showing the sensor locations when you select your vehicle's year, make, model, and engine.

* Visually inspect the engine: Look for a small, threaded sensor usually near the oil pan or lower block, near the cylinder head, on the passenger side. It's usually a single-wire sensor with a connector.

Remember to be careful when working near hot engine components. Allow the engine to cool completely before attempting any inspection or repair.