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Headlight Flicker 2016+ GMC Denali

6.2_GMC_DEN
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newdude Senior Enthusiast

newdude

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Your avatar and signature say you drive a 2014.  The truck in the video looks like a 2014 with 2016+ up lights swapped into it?  If that's the case, anything could be causing this however, seeing the signal is flashing in the mirror, I'm wondering if there is a wiring issue or backfeed issue on the signal circuit or the BCM.  I say this because the DRL cancels out at times for the signal to run on the lower portion of that light.   

Edited by newdude
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