Where is map sensor on 2003 Chevy truck?

The MAP sensor (Manifold Absolute Pressure sensor) location on a 2003 Chevy truck varies slightly depending on the engine. It's usually found on or near the intake manifold. To be certain, you'll need to know your engine size (e.g., 4.3L, 4.8L, 5.3L, 6.0L, etc.).

To find it, you should:

1. Consult your owner's manual: This is the best place to start. The manual will have diagrams showing the location of various sensors.

2. Use a repair manual: A Haynes or Chilton repair manual for your specific year and engine will have detailed diagrams and instructions.

3. Look online: Search for "[Your Truck's Engine] MAP sensor location" on Google Images. You'll likely find pictures of the sensor on similar trucks. Be careful to match the engine and year precisely.

4. Check common areas: The MAP sensor is often mounted on the intake manifold itself, or on a nearby bracket or tube. It's usually a small, cylindrical sensor with a single electrical connector.

Important Note: Before attempting any work on your vehicle, ensure the engine is off and cool. Improper handling of the sensor or its connections can damage your vehicle's computer system.