Pull up to a store that has glass windows and use it as a mirror.
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DRL’s are (supposed) to be on at all times unless the headlights are on. The headlights on indicator is on when the headlights are on. See the “warning lights, gauges, and indicators” section of your owners manual. Screen shot below from the owners manual in the “help” section of the MyGMC app.Maybe I'm a bit naive on this one.... If I'm driving, how do I know if DRLs are on or my regular headlights? Assuming sunny weather, mid afternoon. Is there a sign/icon on the dashboard?