2014 Silverado Trailer Light Problem

[Murns4]

Hey guys,

 

Recently any trailer that I hook up to my 2014 Silverado the brake and turn signals will work but not the running lights.  Also if I turn on the running lights or markers lights, whatever you wanna call them, none of the lights work.  I tried testing the wiring harness in the bumper and it shows that no power is coming out of the harness which is even more confusing considering the brake and turn signals were working.  Anyone ever have this issue or know where to point me to look for issues?  Maybe it is just the part that is in the bumper that has gone bad?  I tried cleaning it out and put electrical grease in the connection but it still did nothing for me.  I appreciate any responses! 

[silveradosid]

check under hood fuse boxtrailer wiring.pdf

[jcgib81]

I had the same problem with my 2017 Sierra 2500 when I rented a uhaul trailer. Fuse number 15 was for traikler running lights and it was blown. Replaced it and it has been all good. Might be the same number for your truck.

 

J

[Eddie 70]

47 minutes ago, jcgib81 said:

I had the same problem with my 2017 Sierra 2500 when I rented a uhaul trailer. Fuse number 15 was for traikler running lights and it was blown. Replaced it and it has been all good. Might be the same number for your truck.

 

J

Same on my 2014 when I first tried to haul a trailer.

[Murns4]

Not sure how I did not think of checking my fuses first but thank you guys for the suggestions!!