While returning from a week long trip from BC, we experienced our truck indicating Check Trailer Wiring on dash info centre. It then indicates trailer is connected and will go back and forth with these messages and annoying dinging sound. I have tried plugging the trailer into the factory plug on the bumper and still have the same issue. All lights and brakes seem to be working fine. Looked over exposed wiring and can see no obvious signs of problems. Our truck is a 2015 GMC 3500 srw, Duramax and our trailer is a 2015 Wildcat 312BHX. This is our third season with the trailer and second with the truck. Anyone experience this problem?Thanks

On my truck the problem was in the plug from the trailer. I bought a new plug and wired it in and that fixed the problem. Amazon

Had this happen on an older 2006 Ford. The problem was the connections at the axles themselves. Appeared as though the connections were scotch locks that had been taped down onto the axles. The tape came loose allowing one connection metal peg to strike the axle tube from time to time causing a fault.

I just recently had the same issue on our brand new Ram. Turned out not be the truck but the trailer. I made a post about it if you look under our name called intermittent brakes. Turns out our two year old trailer was the issue. 3 of the 4 magnets burned up. The wires going from axle tubes to the magnets became brittle and failed and some how grease from the bearings made its way on to the shoes. Not a good sign so we ditched the trailer and picking up the new one sometime this week.

Had the same problem I ran a separate ground wire from trailer the new computers are very sensitive

When we had a tt/truck we had the same problem somewhere in Montana. Cleaned the dust and dirt out of the plug and the problem stopped.

"Check Trailer Wiring" | Good Sam Community

Precise_One
Explorer
Aug 07, 2016
Thanks for all the responses. I will do some further investigating.
CoMoCo
Explorer
Aug 07, 2016
Had the exact issue last year - one of the wires near a trailer brake magnet was the culprit. The controllers on the new trucks are very sensitive and pick these things up whereas the older trucks weren't as sensitive.
dahkota
Explorer
Aug 07, 2016
When we had a tt/truck we had the same problem somewhere in Montana. Cleaned the dust and dirt out of the plug and the problem stopped.
lak356
Explorer
Aug 07, 2016
Had the same problem I ran a separate ground wire from trailer the new computers are very sensitive
Nicholsfamily05
Explorer
Aug 07, 2016
I just recently had the same issue on our brand new Ram. Turned out not be the truck but the trailer.

I made a post about it if you look under our name called intermittent brakes.

Turns out our two year old trailer was the issue. 3 of the 4 magnets burned up. The wires going from axle tubes to the magnets became brittle and failed and some how grease from the bearings made its way on to the shoes.

Not a good sign so we ditched the trailer and picking up the new one sometime this week.
Retired_JSO
Explorer
Aug 07, 2016
Had this happen on an older 2006 Ford. The problem was the connections at the axles themselves. Appeared as though the connections were scotch locks that had been taped down onto the axles. The tape came loose allowing one connection metal peg to strike the axle tube from time to time causing a fault.
agesilaus
Explorer III
Aug 07, 2016
On my truck the problem was in the plug from the trailer. I bought a new plug and wired it in and that fixed the problem. Amazon

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"Check Trailer Wiring"

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