No Trailer Connected Issue

Oldphart50 · March 31, 2023

I’m having the same issue on a 2021 Silverado LTZ. My boat trailer worked a while ago, as did a utility trailer. But both now show “no trailer connection “ on DIC. I’ve cleaned contacts on truck and connector and tried two different connectors. Has GM or any body found a resolution to this issue, it apppears to be a reoccurring problem.

MTU Alum · April 1, 2023

1 hour ago, Oldphart50 said:

I’m having the same issue on a 2021 Silverado LTZ. My boat trailer worked a while ago, as did a utility trailer. But both now show “no trailer connection “ on DIC. I’ve cleaned contacts on truck and connector and tried two different connectors. Has GM or any body found a resolution to this issue, it apppears to be a reoccurring problem.

The issue is due to the trailer information module (TIM) not sensing enough resistance to supply power to the lighting circuits. The most likely issue is a poor ground on the trailer. If the trailer wiring is a flat four way, it uses the trailer ball as the ground. You should have a white wire going to trailer frame. I would clean that mounting surface and add star washer. You need a good consistent ground from trailer frame to the truck frame. I would look to see how rusty your trailer ball or trailer coupler are. You could put steel wool on top of your ball and clamp your trailer over top. Driving with steel wool will help cleanup the surfaces and get a better ground. I don't love how the system works, but ultimately it's a ground issue causing your issue.

#iworkforGM

Oldphart50 · April 1, 2023

Thanks, I will check out my ground, sounds reasonable

maxfli11 · April 3, 2023

2022 2500HD: Beyond frustrated with this over engineered mess. Rewired my utility trailer this winter, with new LED's and wire. Couldn't get it to work. Took several hours before i made a profile for it and told the truck what exactly it had. Worked fine. Fast forward 3 mo. I hook to it today and got nothing. No trailer. I like my stuff to work when I need it to, and I really don't have the time for this crap every time I hook up. Anyone come up with a fix?

Edited April 3, 2023 by maxfli11

BB&Chiveon · April 3, 2023

I have had 2020 since the first ones came out and I just had the trailer loose it’s profile while driving after 3 yrs . Rear camera kept working though. I was 6 hrs from home and did it like not having trailer temps and psi . Got home and added it again .

shadow gray 2020 hd · April 7, 2023

On 1/9/2023 at 12:51 PM, GMCustomerService said:

This is certainly not what we like to hear, JakeJ. Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2020 GMC Sierra AT4. To do so, please send an email to [email protected] with ATTN: JakeJ/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s Privacy Policy, please visit https://www.gm.com/privacy-statement.html. The information you provide may be monitored and recorded and is subject to the GM Privacy Statement.

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Why do you only reply to or pick certain members? Some of us on this board have had multiple problems and you seem to ignore them within the same threads.

Currently I have brakes that are noisy AGAIN, dealer has tried twice to fix, and they are actually worse now than ever. Truck is a 2020, that I bought new in August of 2020 before it was even delivered to the dealer, only has 20,000 miles on it. Last time the dealer had it for the brakes, they told me they cannot do anything more, they said that it is normal. I have on and off issues with my trailer module. Most the time it won't pick up my trailer tpms sensors and I have to manually check each tire. Sometimes it won't even detect my trailer is connected. I have discovered there is a leak above my rear window now, dealer can't even look at it until next Friday.

Edited April 7, 2023 by shadow gray 2020 hd

Jettech1 · April 10, 2023

On 4/7/2023 at 5:40 PM, shadow gray 2020 hd said:

Why do you only reply to or pick certain members? Some of us on this board have had multiple problems and you seem to ignore them within the same threads.

Currently I have brakes that are noisy AGAIN, dealer has tried twice to fix, and they are actually worse now than ever. Truck is a 2020, that I bought new in August of 2020 before it was even delivered to the dealer, only has 20,000 miles on it. Last time the dealer had it for the brakes, they told me they cannot do anything more, they said that it is normal. I have on and off issues with my trailer module. Most the time it won't pick up my trailer tpms sensors and I have to manually check each tire. Sometimes it won't even detect my trailer is connected. I have discovered there is a leak above my rear window now, dealer can't even look at it until next Friday.

Here's the scoop about that GM customer service message. I actually emailed them with a problem I was having. All they will do is set you up for an appt with a local dealer. That's all. When I found that out I was like, hell I can make my own appt. So basically all they do is give you a name of a local dealer to you and help you set up an appt. That's it...nothing more. I declined and did it myself. So there you have it!