How to test and replace air charge temperature sensors

Watch this car repair tutorial video that demonstrates how to test and replace your GM's air charge temperature (ACT) sensors, also known as the Manifold Air Temperature (MAT) sensor. Once you extract the codes from the vehicle and realize that troubleshooting begins with the air charge temperature sensors, there is a quick test that you can perform to find out if your air charge temperature sensors are working properly. Follow the procedure involved with testing this sensor:
-Connect digital Ohmmeter leads
-Touch tip of sensor and observe readings
-Locate and follow diagnostics chart

This tutorial performs this method to help you test and repair your GM vehicle's air charge temperature sensors.