Where is the knock sensor on a 1999 Chevrolet Malibu?

The knock sensor on a 1999 Chevrolet Malibu is located on the cylinder block, typically on the passenger side (right side), near the front of the engine. However, the exact location can vary slightly depending on the specific engine (there were a few different engines offered in the 1999 Malibu).

To be certain, you should:

* Consult your vehicle's repair manual: This is the most reliable source for the exact location. The manual will have diagrams and specific instructions.

* Use a reliable online parts diagram: Many online auto parts stores (like AutoZone, Advance Auto Parts, etc.) allow you to select your vehicle's year, make, model, and engine, and then view a parts diagram that will show the knock sensor's location.

Without knowing the exact engine in your 1999 Malibu, I can only give a general location. Visually inspecting the engine block on the passenger side, near the front, is the best way to locate it after consulting a repair manual or parts diagram. It's usually a small, threaded sensor.