* Throttle Position Sensor (TPS): This sensor is located on the throttle body itself. The throttle body is usually found on the top of the engine, where the air intake tube connects to the engine. The TPS is a small sensor bolted to the throttle body.
* Manifold Absolute Pressure (MAP) Sensor: This sensor is often found on the intake manifold, and it's usually a small, round sensor with a single vacuum hose attached. Its location can vary slightly depending on the specific engine configuration, so you might need to consult a repair manual or online diagrams specific to your truck's year and engine to pinpoint it exactly.
Therefore, there isn't one single "air intake sensor." The engine's computer uses information from both the TPS and MAP sensor, along with other inputs, to determine the amount of air entering the engine and adjust fuel delivery accordingly.