Jump to content

Trailer issue -2015 chevy 1500 w/ trailer brake

hondarider94

Recommended Posts

hondarider94 Enthusiast

hondarider94

Posted
Posted

Truck randomly "check trailer wiring" followed immediately by "trailer connected"

 

I replaced the trailer side plug first and it made it worse, then I replaced the truck side trailer plug.

 

Hooked it up drove 50ft it threw the dash code. Drove 10 miles to my house. Nothing. Put my rzr on it, threw the message 10 times in a mile. Then it stopped, drove 40 miles absolutely nothing...?

 

Trailer is an older 2002 rice tandem axle trailer.

 

Any ideas?

 

Sent from my SM-G955U using Tapatalk

 

 

hondarider94 Enthusiast

hondarider94

Posted
  • Author
Posted
Thanks, I will try the emery cloth. But they are both brand new plugs.

My message is never about brakes, just wiring

Sent from my SM-G955U using Tapatalk

  • 2 weeks later...
hondarider94 Enthusiast

hondarider94

Posted
  • Author
Posted

Update:
Went under the trailer and wiggled and moved every single wire, it didnt trip this message.

Then when I left with trailer attached BAM it started saying "check trailer wiring... trailer connected".
I have learned its ONLY the brake that messes up. With my lights turned "on" the lights never go away when the truck says that message. Sometimes it will say check trailer wiring and the trailer brake wont work for a minute or two then it will kick back in. BUT while this is happening, the lights still work.

I'm about to replace the trailer battery for electric brakes. It's pretty old.

Sent from my SM-G955U using Tapatalk

  • 3 months later...
catpartsman Enthusiast

catpartsman

Posted
Posted
Update:
Went under the trailer and wiggled and moved every single wire, it didnt trip this message.

Then when I left with trailer attached BAM it started saying "check trailer wiring... trailer connected".
I have learned its ONLY the brake that messes up. With my lights turned "on" the lights never go away when the truck says that message. Sometimes it will say check trailer wiring and the trailer brake wont work for a minute or two then it will kick back in. BUT while this is happening, the lights still work.

I'm about to replace the trailer battery for electric brakes. It's pretty old.

Sent from my SM-G955U using Tapatalk



My truck does this exact same thing. My dad removed the brake battery for some reason but on his truck, 2001 2500 Chevy, he doesn’t have any issues. Did the trailer battery fix your issue?


Sent from my iPhone using Tapatalk
Rukus Enthusiast

Rukus

Posted
Posted

I had the same issue.   Could not figure out for the life of me.   2018 1500... I checked all the wiring.   Under the truck the triller wiring comes for a hub that also has the brakes, LED bed lights etc... I both the cable and swapped it just incase (dealer could never duplicate issue). I then bought a new battery for trailer brakes system (not because fo the issue but because it was older and going on a long trip through mountains).   I have not had the issue again.  THIS MAKES ZERO SENSE.  But... it is what it is.   I have yet to have the issue again (going on about 3 months).   Take it for what it is worth.  

MichiganCCab Enthusiast

MichiganCCab

Posted
Posted

I just dealt with this issue. I changed to the GM recommended trailer end plug which did not fix the problem. Ended up checking all grounds on the trailer. there was a ground terminal block that was corroded. Changed that and cut wires back to clean copper. Also where the main ground wire attached to the trailer frame, removed and cleaned the ground block and frame to bare metal and through bolted it back onto the frame, then cut back ground wire to fresh clean copper. Problem solved for me! Hope this helps.  Also could be a shorted to ground trailer brake wire somewhere, often times the wire that is fed through the axle grounds out inside. 

tpinck Enthusiast

tpinck

Posted
Posted

This is happening to me in my 2016 Silverado 2500HD duramax/Allison while towing a fifth wheel 35ft coach. In June a dexter axle  dealer checked the trailer wiring and replace one of the wires that travels through the axle as it was shorting out also re-did all the connections. In August was leaving the campground on the beach and had to use 4-wheel drive to get out, shortly thereafter I started getting the "trailer connected" followed by "Check Trailer Wiring" messages. Changed the 7-way cable and connector from trailer and the truck, no change. At local dealer service manager connected truck to another camper and did not get messages and breaks worked. Continued to get message as soon as I connect trailer. went to a different dealer and they said the "trailer control module" was defective and replaced it. Time to move the trailer again, connected and got the same messages. They will come and go, stay on and off for 15 to 20min the will go away until i apply breaks again, then they are back on and off for awhile. 

 

I have never actually lost the breaks on the trailer. This last move I did notice that as I applied breaks the trailer breaking was not proportional to the pressure applied. Some times it was a smooth stop and sone times it has a full slam stop. I can find nothing wrong on the trailer, although I am unable to remove the tires to check electric magnet wiring, I just do not have the strength anymore to lift the tires.

 

Any help would be greatly appreciated. Oh every trailer repair dealer or mobile repair service are broke over 2 months ahead.

 

 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • tjonesdfw
      2027 GMC Sierra: Official Discussion

      By tjonesdfw · Posted

      Whoever greenlighted the work truck matte black front bumpers on every trim but the AT4X should be fired!  I was hoping that was an AI mistake, but just realized they were on every model of the 2027 Silverado too.     Some parts of the interior do look premium, but the Denali Ultimate dashboard looks like an afterthought.  At least they appear to have lost the microfiber the high end Silverado models showed, but the '27 High Country dash looks better than the Denali.  
    • bluev8
      Intermittent no-code issues on 2022.5+ V8 trucks — what did the shop fail to capture?

      By bluev8 · Posted

      New member here. I am researching a read-first event-recorder concept for late-model GM V8 trucks. This is not a sales post. There is no product link, price, preorder, or mailing list. I am trying to determine whether the underlying problem is real before building anything.   Has your truck ever had a brief problem such as: - rough running or a momentary misfire - an oil-pressure warning or unusual pressure event - reduced power or a brief stall - a U-code or lost-communication problem - a symptom that disappeared before the dealer or independent shop could reproduce it   If so, I would appreciate the following details: - year, model, engine, and mileage - what happened and under what conditions - whether a DTC and useful freeze-frame data were stored - whether the shop was able to reproduce it - what the eventual confirmed repair was, if known - what additional information would have helped the diagnosis   The concept being evaluated is a removable leave-in recorder that continuously retains a rolling window from before and after an event. It would not tune, reflash, clear codes, or change the vehicle calibration.   I am also not claiming that it could predict lifter failure or see every internal ECM variable.   The real question is whether continuous event history would add enough useful evidence beyond freeze frame, GDS2, and existing scan tools — or whether it would simply be another unnecessary gadget.   For owners and technicians, which problem would make something like this genuinely useful: 1. intermittent misfire or AFM/DFM-related behavior 2. oil-pressure events 3. lost communication or electrical faults 4. none of the above Please be blunt. Negative feedback is just as useful as positive feedback.
    • Atlas
      2027 GMC Sierra: Official Discussion

      By Atlas · Posted

      No tears over the SLE and SLT trim levels disappearing but I kind of loathe the "Elevation" name. It's a truck--skip the elegance.   The slab-dashboard design is decidedly different. Almost has a Hummer flavor to it. "Professional Grade" seems to be leaning very white-collar, tech-driven these days moreso than blue-collar, functional design.   The Silverado would be my choice between the two new trucks. Pleased with the engine lineup in both. The GMC is a little "too much" for a truck, IMO, and the Denali borders on ridiculous - but I do know there are buyers for luxury trucks out there. It's just not my speed.
    • GMCustomerService
      Electrical problem

      By GMCustomerService · Posted

      Your safety is of utmost importance, @joshua1221, and we understand the importance of having all your lights working in your truck. If you have not already, we highly encourage you to bring your concerns to the attention of your local GM dealer. They are in the best position to diagnose your concerns as well as confirm the compatibility of the mirrors with your truck. Additionally, we would like the opportunity to explore any way we may be of assistance. When you have a moment, please visit: https://s.gm.com/support-request and fill out the support request form with all pertinent details. This form helps our team gather the right information and ensures your request is routed appropriately.
    • newdude
      2027 GMC Sierra: Official Discussion

      By newdude · Posted

      - I like the outside but not as much as the Chevrolet.  They ICE'd the EV styling and it works, but I think exterior goes to Chevy on this one.     - SLE and SLT dead = Not.  Surprising.  Fits into the rest of the GMC lineup like this which (aside from Pro) matches the rest of the family.  Elevation, AT4, Denali.     - Interior.  Sophisticated Malaise era.  Why do I say Malaise?  Drawn with a ruler.  Rectangles everywhere.  Looks very premium though.    

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...