Driver's Side DRL shuts off after time

[WSFD6107]

Hello all,

I have a 2015 Sierra SLT, that I upgraded the headlights to 2016 LED Headlights with the "C" DRL's back in 2017. These lights are OEM, not aftermarket. All has been good until a couple of weeks ago. I noticed about two weeks ago that while I was stopped behind someone, i could see in the reflection, my driver's side DRL was out, passenger was working. I had been driving for about 2 hours or so. So I went to look into it the next day, started the truck up and the DRL light was now working. Well, I can't fix it if it's not acting up, so I left it alone. Yesterday, my wife says that the driver's side DRL is out, sure enough it is. And I had been driving for about 3 or so hours. So I go to look into it today and guess what, yes, the DRL is working.

Is there some kind of heat sync or something that if it gets too hot, it shuts the DRL off? Passenger side is working fine. Both headlights work fine along with the DRL's dimmed when the headlights are on. I remember when I first installed these lights, they have an aluminum finned box behind them. Not sure if that's a control module or some kind of heat diffuser.

Any help or ideas, would be greatly appreciated,

Thanks in advance

[silveradosid]

yes there is a multi function control board inside the headlight, you would have to take the headlight apart to access it. you cannot buy the board separately, so new headlight or go get a used one or salvage one from a auto wrecker