Understanding this system also aids in troubleshooting. If your automatic headlights stop functioning, the first culprit is often a dirty or obstructed ambient light sensor (a common issue if a windshield sun shade is left on the dash). Next, check the “AUTO” setting on the switch itself. More complex issues, like a failed sensor or a BCM problem, may require a professional diagnostic scan. By demystifying this everyday technology, you empower yourself to use it as intended, ensuring that your Chevy Tahoe’s most fundamental safety feature—the ability to see and be seen—is always operating at its best.
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