2018 denali front turn signal intermittent

[JP Cortez]

Hi all I have a 2018 sierra 1500 Denali that since I bought have had multiple times completely random that the front led strip for the turn signal doesn't work on the left side or sometimes right side or both. I had at dealer once and of course never happened then at next dealer and they seen it happen once but couldn't figure it out. Any ideas on what controls the LED? Is it a separate module or the BCM. I can't seem to find any issues on this issue. Please Any help would be great

[steelerdude15]

I would first try finding the fuse/relay for the turn signals and pull it. I would make sure that it is clean and the fuse block hole it plugs into is clean and free from dust.

If that doesn’t work, the next thing I would do is try to unplug the lights from the wiring harness to make sure there isn’t any corrosion. If there is any, I’d clean it out.