Integrated trailer brake problems

[Rail_Runner]

So I have a 2015 crew with integrated trailer brakes I have used them twice first time plug trailer in and they popped up on dash only issue I hadon't was going down the highway a few times it would pop up trailer not connected but then it reconnect thinking it was a loose. connection. On trip back home I made sure it was in all the way and had no issue at all. Last night I hooked up same trailer and it doesn't recognize that the trailer is even hooked up. I check all fuses all were good tested all lights work but nothing from brakes. Service trailer brakes did pop up one time when starting truck but at the time I didn't have trailer hooked up. Any suggestions would be greatly appreciated on where to look next. Before I end up taking it in.

[Sierra706]

Check the ground connection on the trailer itself

 

 

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[Waaazooo]

So I have a 2015 crew with integrated trailer brakes I have used them twice first time plug trailer in and they popped up on dash only issue I hadon't was going down the highway a few times it would pop up trailer not connected but then it reconnect thinking it was a loose. connection. On trip back home I made sure it was in all the way and had no issue at all. Last night I hooked up same trailer and it doesn't recognize that the trailer is even hooked up. I check all fuses all were good tested all lights work but nothing from brakes. Service trailer brakes did pop up one time when starting truck but at the time I didn't have trailer hooked up. Any suggestions would be greatly appreciated on where to look next. Before I end up taking it in.

Check the wiring for obvious wire shorts. I would also try the wire harness with an ampmeter... make sure you're wiring issues aren't under the bed.

 

 

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[powerhaulic]

I'm betting it is a trailer issue, rather than vehicle.

[Waaazooo]

Me too. But it's easier to plug in an ampmeter than it is to crawl around under a trailer.

 

 

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[Rail_Runner]

Trailer is OK checked with other truck. On brake output with meter less than one volt With brakes applied . Like I said fuses are all good. And have Power at fuse box.

[powerhaulic]

Are all the terminals clean in plug?

 

the brakes will not put out voltage unless load is sensed in circuit

 

the next likely location for corrosion is the back of the bumper plug, there is a lock to release to remove plug. Spare tire out is a wise idea then access is good to back side. there is not enough silicone grease to prevent water intrusion.

[Donstar]

Yes, eliminate the easiest first. Spraying some contact cleaner or WD40 on/in the connector may solve your issues. Also, check to see if you have a direct ground wire from your trailer to your vehicle.

[Payton34]

I keep getting the service trailer brake message. Last month dealer found nothing wrong but cleaned all connections and applied dielectric grease. Day after picking up the message was on a again. Then it went 3 weeks without the message until last weekend. Just dropped it off at the dealer today. I hope they just replace the module by the spare tire.

[Payton34]

I am still getting this message. Brought to dealer last week and they found nothing wrong again. I am really getting tired of this message pop up. When it does come on it will come on every 2 minutes while driving. Only solution I found to turn it off when driving is set gain on on the dash switch and it goes off. It will stay off for a few weeks then come on again?

[Geoffwhite18]

100% positive it's the trailer. Poor connections like to show up while it's bouncing down the road.

[Payton34]

Sorry I forgot to mention that the message has only come on when I am not towing anything. Everything I have towed has surge brakes not electric so I have never used the trailer brake controller. Also the message has never com on when towing.

[Payton34]

This stupid message is still coming on.  When it comes on it repeats every 5 sec until I either turn truck off or adjust trailer brake gain on dash switch.  This is always when I am not towing so it is not a trailer issue. The dealer keeps saying they find nothing wrong even after I take pics of the message so they just clean connections.  The last time it came on was a few hours after going through a car wash.  I am now under extended warranty how do I get dealer to actually replace and fix it. My dealer sucks they never do any repairs and say they cannot duplicate the issue.  

[6.2Midnight]

Did you ever get this figured out?

[silveradosid]

 a friends 2014 denali does this intermittently ,same crap from dealership nothing wrong. i told him to try and work the slide control back and forth and he said that would shut it off for awhile. replaced the switch in the dash and the problem is gone, the question is for how long being the new switch is identical to the old one