Understanding Your Chevy Tahoe Automatic Headlight System morsunled.wordpress.com

Crucially, this system is distinct from the Daytime Running Lamps (DRLs). DRLs are a separate, lower-intensity function designed to increase your vehicle’s visibility to other drivers during daytime hours. In most Tahoes, the DRLs activate automatically whenever the vehicle is in drive and the parking brake is released, regardless of what the ambient light sensor reads. The automatic system overrides the DRLs when it determines full headlights are necessary. This layered approach ensures you are always visible, while providing optimal illumination for your own path.