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7 Pin trailer connection issue

Londart2020
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Londart2020 Enthusiast

Londart2020

Posted
Posted

Wondering if anyone has had this issue. So hooked up my trailer for the first time, no issue. Went to come home 4 days later, and when I hooked up the trailer the truck did not see it connected. I crawled under the truck gave the connection a couple squeezes and when I got back in the truck it was working. The black plate where the 7 pin and and the GM cameras plug in seemed really loose and I didn't see anyway to tighten it. I just don't want to be thinking everything is good driving around and really I don't have any lights. So just wondering if anyone else has come across this same issue? Thanks.

migrabill Enthusiast

migrabill

Posted
Posted

I have this issue sometimes when I hook up the trailer to an already running truck. I never have the problem if the truck is turned off - then plug in the trailer - then turn on the truck.

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Londart2020 Enthusiast

Londart2020

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9 minutes ago, migrabill said:

I have this issue sometimes when I hook up the trailer to an already running truck. I never have the problem if the truck is turned off - then plug in the trailer - then turn on the truck.

Seems like something a $80K should not have an issue of...?

migrabill Enthusiast

migrabill

Posted
Posted

Yeah - I guess I agree but in their defense the instructions for the Trailer/RV profile part of the infotainment screen says to plug in the trailer to a turned off truck. Upon turning the truck on all the camera angles set. 

Londart2020 Enthusiast

Londart2020

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14 hours ago, migrabill said:

Yeah - I guess I agree but in their defense the instructions for the Trailer/RV profile part of the infotainment screen says to plug in the trailer to a turned off truck. Upon turning the truck on all the camera angles set. 

Yeah I can see that, but my issues came after the trailer was hooked up and and did cycle the ignition. I was about to pull out to leave and was going to do the light check, and it said no trailer connected. But that is a good point I will make sure I pay attention to, but still how loose the plug is, is unacceptable. 

DeadManWalkin Enthusiast

DeadManWalkin

Posted
Posted

Had this issue when I picked up a new to me 5th wheel. Truck was turned off when trailer was plugged in, truck recognized the trailer and I did the configuration I wanted, drove 1/4 mile and then the truck said no trailer connected. Pulled over and checked and it was still plugged in. Pulled plug and plugged back in and all good? 

  • 3 weeks later...
TripDad Enthusiast

TripDad

Posted
Posted

GM recommends using the trailer plug end from the same company that makes the truck side connector.  There is a thread that discusses this in the Troubleshooting forum, if i remember correctly.

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  • 2 years later...
2Ranchers Enthusiast

2Ranchers

Posted
Posted

Did anyone figure out how to tighten up the 7/4 pin mount in the bumper. Ours is very loose. Scary loose.

 

  • 3 months later...
Don DeKock New Member

Don DeKock

Posted
Posted

Having an interment problem with a 2024 Chevy 2500 some of the time when we connect the trailer to the truck the trailer lights will do a very dim strobe.  We have also had a message that the electrical trailer brake setting was not recalled and to adjust the trailer brakes.  Any one lse having this issue or suggestions of how to fix it? 

newdude Senior Enthusiast

newdude

Posted
Posted
4 minutes ago, Don DeKock said:

Having an interment problem with a 2024 Chevy 2500 some of the time when we connect the trailer to the truck the trailer lights will do a very dim strobe.  We have also had a message that the electrical trailer brake setting was not recalled and to adjust the trailer brakes.  Any one lse having this issue or suggestions of how to fix it? 

 

 

The blinking is normal, part of the trailer theft system.  Its more noticeable with LED lights.  

  • 3 months later...
MPGATOR New Member

MPGATOR

Posted
Posted

I am as well having the same problem. I bought a 7pin tester but it blinks as well. I plugged it in with the truck started and  with it not started no differences. 

tex Enthusiast

tex

Posted
Posted
On 12/1/2023 at 11:13 AM, Don DeKock said:

Having an interment problem with a 2024 Chevy 2500 some of the time when we connect the trailer to the truck the trailer lights will do a very dim strobe.  We have also had a message that the electrical trailer brake setting was not recalled and to adjust the trailer brakes.  Any one lse having this issue or suggestions of how to fix it? 

 

On 12/1/2023 at 11:18 AM, newdude said:

 

 

The blinking is normal, part of the trailer theft system.  Its more noticeable with LED lights.  

I have the 2024 GMC 2500HD blinking problem on my trailers and it seems anything but normal to me

newdude Senior Enthusiast

newdude

Posted
Posted
15 hours ago, tex said:

 

I have the 2024 GMC 2500HD blinking problem on my trailers and it seems anything but normal to me

 

But it is.  Trailer anti-theft.  

 

14 hours ago, tex said:

https://gm-techlink.com/?p=14165

 

 

That document wouldn't apply as it covers 2019-2022 1500 and 2020-2023 HD.

 

LED lighting the trailer theft flash is much more noticeable than incandescent bulbs. 

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