2017 Sierra led turn signal failure

[MDayMN]

Has anyone had their factory full led headlight turn signal fail?

A couple days ago I noticed it wasn’t always flashing with the turn signal and then it completely stopped. Checked the wiring today and it’s getting power, cleaned the contacts but still nothing. 
Not thrilled about spending $900 for a new headlight, maybe someone has had the same problem and been able to fix it?

[JimCost2014]

Not the exact same problem, but maybe the source of yours.

 

Just had the driver's side replaced on my 18 due to having moisture inside of the housing. Took a little to see at first, but pretty obvious when it starts building up.

[rav3]

Just found this video on Youtube. Do you have any water in your headlight housings? Not sure this video will help or not, but thought I'd share it anyway. Keep us posted

 

GMC Sierra Daytime Running Light Replacement

[dieselfan1]

If I was spending that much for one replacement, I think I'd look at changing both to aftermarket setups. Like this ....
https://www.ebay.com/itm/2014-2018-GMC-Sierra-XB-LED-Morimoto-Projector-Headlights-Headlamps-L-R-Set-/265072692987?_trksid=p2349624.m46890.l49292

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