Trailer Lights issue

[steve841]

Has anyone noticed trailer lights flickering on/off while your vehicle is OFF ?

 

2019 High Country 

[GMCustomerService]

On 9/25/2018 at 9:32 AM, steve841 said:

Has anyone noticed trailer lights flickering on/off while your vehicle is OFF ?

 

2019 High Country 

Hi, Steve. I hope you're enjoying your new Silverado High Country. If you’re considering visiting your servicing GM dealership about your trailer lights, we would be happy to work alongside them, to provide an additional layer of support. Feel free to send us a private message, if you’d like to further discuss your situation.

 

 

Anthony J.
 

[steve841]

Here's a few videos to show what's happening.

 

https://photos.app.goo.gl/cZ38mN1gTEhHFX66A

 

 

[Fisch]

I have the same issue with my 2019 Sierra Denali, have taken it in to dealer for repair yet....

[Fisch]

Correction have not  taken to dealer yet

[steve841]

I hope you all are watching this thread ... 

 

My dealer has nothing to offer other than notifying GM support....

 

On 10/22/2018 at 10:26 AM, GMCustomerService said:

Hi, Steve. I hope you're enjoying your new Silverado High Country. If you’re considering visiting your servicing GM dealership about your trailer lights, we would be happy to work alongside them, to provide an additional layer of support. Feel free to send us a private message, if you’d like to further discuss your situation.

 

 

Anthony J.
 

 

[Clay00024]

My 2019 High country is doing the same thing. I think it has to do with the security. I turned it off and it seem to stop

 

[kensseirra]

No fix for this yet my 2019 Sierra SLT dose the same the same thing my truck and a lot of others have trailer problems

[Jack D]

I'm guessing that the flickering is caused by the trailer theft alert system sending an electrical pulse to confirm that the trailer is still attached. This is part of the trailering tech package that has been added. If you unplug the trailer while the truck is locked, it will sound the horn & flash the lights.

[J-Stroke]

I have the same issue with my 2019 High Country. This article explains it is a normal function of the theft alert system: https://gm-techlink.com/?p=11176