How do you reset check engine light on 2009 chevy?

To reset the check engine light on a 2009 Chevy, you can disconnect the negative battery cable for about 10-15 minutes, which will clear the vehicle's computer memory. Alternatively, you can use an OBD-II scanner to read and clear the trouble codes, which will also turn off the light. However, if the underlying issue causing the light to activate is not addressed, the light may turn back on. Always ensure to diagnose and fix the problem before resetting the light.