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Old 06-17-2015, 08:00 AM   #15
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2007 27' International CCD FB
Nomadic , USA
Join Date: Jul 2013
Posts: 2,694
All controllers are not the same, the controller boards change from year to year, model to model sometimes. Sometimes not. As I stated earlier, I learned that the controller board on my integrated controller isn't compatible with some disc brakes on certain TT's but the following year, the controller while looking identical actually has different internal guts and supports those units.

Sometimes this is hardware, sometime it's software. So check with a dealer, they may be able to program or update your controller.

Family of 4 living, working & exploring the USA in our Airstream.
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Old 06-17-2015, 07:09 PM   #16
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2016 30' International
Woodstock ON , North Fort Myers FL
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Posts: 46
My 2014 GMC All Terrain Crew with integrated brake controller works perfectly with my 2015 28'International, gain set to 7. Nice modulation and no issues...!

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Old 06-18-2015, 07:52 AM   #17
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Let's start from the beginning and work from there.

2013 GM trucks came from the factory with the trailer brake controller feature disabled. They also disabled the 12 VDC power from the TV to the trailer. To enable these features you need to open the underhood electrical center and connect the corresponding wires to the corresponding fuses. Else have it done by your dealer.

Please report back once you've verified that your wiring is connected.
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Old 06-18-2015, 09:00 AM   #18
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2014 27' FB International
Rockwood , Maine
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I have GMC 2014 All terrain 1500, I tow several different trailers including the 2014 AS 27FB. Some of my other trailers are in various conditions regarding the electrical status. Some broken running lights, shorts ect. The integrated brake controller would go in to alert mode anytime I hooked up to one of the trailers that did not have "all" lights working ect. A very annoying alarm that could not be turned off. Frustrated with chasing wiring gremlins on some of my older trailers I switched back to the old style under dash aftermarket brake controller. Un hooked the integrated system. No problems with brakes now and my limited light functions on some of the older trailers work as well. I always do an old fashioned walk around to make sure that my critical lights are working. Not the right way to fix the issue, but it worked best for my situation. Howard
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Old 06-18-2015, 09:16 AM   #19
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2015 25' FB Eddie Bauer
Western , ** Big Sky Country ** Montana
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Originally Posted by Mike S. View Post
I have a 2015 GMC also. Sometimes I have an issue with the controller with a utility trailer I have. What fixes it, is to clean the terminals with contact cleaner and push the connector very hard into the socket to get the best connection. Haven't had any issues with the Airstream connector.
We have had intermittent connection issues with both a Ram and a GM ... due to the poor fit between the AS plug and TV socket. It causes the terminals on the socket to eventually spread to the point causing the loss of continuity ... clean and pinch them together and we are good for another few trips. Poor quality of the sockets is my conclusion.
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Old 06-19-2015, 06:32 PM   #20
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2014 25' FB Flying Cloud
Auburn , California
Join Date: Jan 2014
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I has a similar problem with my Chevy truck. Although my brake wire was connected the charge line wasn't. In researching a solution, I discovered that GM doesn't necessarily hook up the charge and brake wires in the engine compartment.

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