Reset check engine Chevrolet silverado 04?

To reset the check engine light on a 2004 Chevrolet Silverado, you can use an OBD-II scanner to clear the trouble codes that triggered the light. Alternatively, you can disconnect the negative battery cable for about 10-15 minutes, which will also reset the system. However, if the underlying issue isn't fixed, the light will likely come back on. It's advisable to diagnose and resolve any issues before resetting the light.