I have an intermittent problem with my TT brakes. I have a 2017 Chevy 2500 with the internal brake module. I recently drove 1000 miles without problem when the truck started alarming with the following message:Check Trailer Connection. It then almost immediately notifies me that the trailer is connected. It is accompanied by an alarm bell and it sometimes happens 3-5 times a minute. The 7 pin plug is in good shape and I can't duplicate the problem. Other than rewiring the entire brake system does anyone have any suggestions? Can a brake magnet go bad intermittently? This didn't start until one of the bolts holding the brake plate on came loose and rattled around in one wheel for hundreds of miles. The TT is a 2008 KZ and it seems unlikely that there is a wiring problem.

Very likely that you do have a wiring problem and it may be in the truck connector, the trailer plug, trailer wiring and maybe that repaired brake. My bet is that you will find it at or near the trailer plug.In dog years and trailer years, 13 is a lifetime.

Sounds like a short. It may well be right at the magnet area caused by the loose brake plate.

Sometimes the 7 pin gets a little bit slightly corroded or the surface of the pins make less than optimal contact. Mine does that once in a while.When I connect, I am in the habit of running the plug in and out a couple times, wiggling, slightly rotating it when I plug it in. I find that helps ensure a good connection.On the trailer connector, I sometimes take a tiny file or similar and rough up the contacts a bit to make sure it has a clean surface in there. Have a look in the truck connector and make sure the pins are clean too. Gotta be careful if you rough them up a bit, don't short out anything hot.

Start simple and apply some dielectric grease to the 7-pin connection.

kellem wrote:Start simple and apply some dielectric grease to the 7-pin connection.Why people do this is beyond comprehension.Dielectric grease, or tune-up grease, is a silicone-based grease that repels moisture and protects electrical connections against corrosion. ... The grease does not conduct electricity, so it shouldn't be applied directly to the mating surfaces (pins and sockets) of an electrical connection

Travel Trailer Brake Problem | Good Sam Community

Fisherman
Explorer
Jun 03, 2021
kellem wrote:
Start simple and apply some dielectric grease to the 7-pin connection.

Why people do this is beyond comprehension.

Dielectric grease, or tune-up grease, is a silicone-based grease that repels moisture and protects electrical connections against corrosion. ... The grease does not conduct electricity, so it shouldn't be applied directly to the mating surfaces (pins and sockets) of an electrical connection
kellem
Explorer
Jun 03, 2021
Start simple and apply some dielectric grease to the 7-pin connection.
BobsYourUncle
Nomad
Jun 03, 2021
Sometimes the 7 pin gets a little bit slightly corroded or the surface of the pins make less than optimal contact. Mine does that once in a while.

When I connect, I am in the habit of running the plug in and out a couple times, wiggling, slightly rotating it when I plug it in. I find that helps ensure a good connection.

On the trailer connector, I sometimes take a tiny file or similar and rough up the contacts a bit to make sure it has a clean surface in there. Have a look in the truck connector and make sure the pins are clean too. Gotta be careful if you rough them up a bit, don't short out anything hot.
bgum
Explorer
Jun 03, 2021
Sounds like a short. It may well be right at the magnet area caused by the loose brake plate.
Lynnmor
Explorer
Jun 03, 2021
Very likely that you do have a wiring problem and it may be in the truck connector, the trailer plug, trailer wiring and maybe that repaired brake. My bet is that you will find it at or near the trailer plug.

In dog years and trailer years, 13 is a lifetime.

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