Vehicle Questions and Answers
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It seems like you may be experiencing a problem with the automatic volume setting on your 2018 Chevrolet Silverado. This feature is designed to adjust the volume based on the vehicle's noise level or speed. If the setting is engaged, your volume is working but you may not be able to control it, and it could be set to "Low". There is also a feature that allows you to prevent teen drivers from changing the volume. If you have disabled these settings and still can't adjust the volume, try using the radio's remote control. If that doesn't work, there may be a firmware issue with the radio's software, and you should take it to your local shop for further assistance.
If the sound isn't functioning on the 2018 Chevy Silverado, it could be due to a faulty button or knob, or possibly damaged wiring.