Running Lights Not Working

[14silverado5.3]

Good Evening All,

 

I have a 2014 Silverado 1500 LT Z71. Aftermarket LED headlights and tail lights. Never have had any issues with them but yesterday my running lights just randomly stopped working. My low beams come on but that is it. No side markers up front and no brake lights in the back when I'm in drive or when I remote start the truck. The brakes work when pressed but at night they don't light up until they are pressed.  Turn signals work up front and in the back. Reverse lights work. License plate light works. 

 

I saw a video on youtube of a guy who has a 2016 who had the same issues in the rear and he bypassed it using a butt connector but it wasn't detailed enough for me to do based off the video and quality. Doing that also wouldn't fix the fact my front running lights won't work (the amber blinkers). I could live with the front ambers not lighting up but I'm more concerned with the brake lights not illuminating in drive at night. 

 

I know the running lights are controlled by the BCM. Is there a good chance this has gone bad? Anything I can do to test and see or is this something I need a dealer to test. 

 

Looking for any suggestions. Thanks

[silveradosid]

the front and rear park lights are fed through the trailer marker relay. check all fuses and the relay . here is the wiring diagram

silverado headlights.pdf

[14silverado5.3]

So the fuses were blown. Replaced and they blew immediately. Replaced the relay and the fuses again. Fuses blew again. So I’m assuming some sort of short. Could it be the bcm. Any suggestions?

[silveradosid]

take your trailer plug apart and see if that fixes the problem

[Ludgero]

Hi I have a 2018 gmc sierra 1500 and tailight running light doesn’t work and the front daytime running light doesn’t work on the right side and also I tried to install an aftermarket led tailight but when I connected it I smelled some burning what could be the problem thank you 

[SSilverado]

Was this issue resolved I’m having the same problems as Ludgero with the right side running lamp in the rear and front DRL is not working.

[Gmctrucks0848]

Hey guys any update running into the same issue with my 2017 GMC Sierra and this is the only article I’ve found so far , all my lights work like , break , reverse , left signal, but my light doesn’t stay on for break and the running light around the normal lights up front.  

Edited April 2, 2022 by Gmctrucks0848

[Nicholas Suddarth]

having an issue with my daytime running lights. only one of the 2 on each headlight come on. the bottom one on the passenger side comes on and the top one on the drivers side comes on. But when I hit my lock and unlock button on my key fob all 4 come on. I checked the 2 fuses for the drl's and they are both fine. anybody have any ideas on what to check next?