Electric over hydrolic brakes

[Sealeggs]

We have a 2014 Ranger 25C on an ez loader trailer with electric over hydrolic brakes. We just purchased a 2016 GMC 2500 Denali diesel as our tow vehicle. Our oem integrated brake control does not operate our trailer brakes. Truck is fine, trailer is fine just dont pair/communicate. GMC is looking into it but wonder if this has been experienced by any of the "nuts" and any fixes.

 

[Irish Mist]

I know on my dodge I have to go through a menu and pick the correct setting.... Make sure your gain is up enough And I would pull the pin on the break away and see if you can hear the pump run.. If the emergency battery is no good it may not be letting enough power go to the pump.. Might all be trying to charge a dead battery.. In case you are unfamiliar with the system .. On the trailer where the brake pump part is, there is a small battery in a box.. Connected to a switch with a pin in it that has a cable you attach to your truck.... In the event the hitch breaks off or the trailer comes disconnected the cable pulls the pin and the battery applies the brakes on the trailer.That is why you should connect that pin to something that is seperate from the hitch.
Hopefully it is something easy like a fuse..

 

[stwendl]

Be careful connecting and electric over hydraulic system to your truck. Check the trail system for compatibility with your truck. You can damage the electric over hydraulic controller in the trailer. Truck companies interfaces to those controllers are NOT equal
My ezloader came with a hydrostar controller and I used it with a 2006 3500 ram. All appeared to be working fine. Some day suddenly the controller was continuously applying brakes. I had a third party brake controller in the dodge that was not compatible with the trailer. Replaced the hydrostar and the break controller and all was working again without issues. Hydrastar makes an additional control box for trucks that are not natively supported. They have a table of supported controllers and trucks somewhere on their website.

Now, I don't know if the truck caused the issue or not. When I opened the hydra star I found moisture in the controller board which could have contributed to the failure. It was raining before. But the trailer was toted for a lengthy period outside and should have failed before. So perhaps the seal was just failing.

Lesson to be learned is to inform oneself about the proper connection between trailer and truck. There is a lot of weight on the trailer. And a ranger tug is just too precious to expose to such risk.

Some trucks allow to adjust for the proper trailer controller. After some other mishap with a broken transfer case I replaced the 06 truck with a 2013 2500 ram with 6.7 Cummins, because of the better mileage, more power and mostly because of the integrated jake brake.

Just checked the hydrastar website and your gmc is not compatible without the adapter module see here

https://www.etrailer.com/Accessories-an ... A-CAM.html

 

[South lake]

My boat and trailer are 150 miles away in storage so I can't get more info right now but... My trailer was built 3 years ago and later I bought my Silverado 2500 Duramax and found out the integrated brake controller wouldn't work with my electric over hydraulic brakes. The folks that built the trailer installed a black box on the trailer that solves the problem. Apparently this is a common problem/solution. If I can get more info on what they installed I'll post it.

 

[knotflying]

Stwendl is on the right track. You need to contact the manufacturer of your brake module on the trailer. They usually will have an electronic component that needs to be installed that will allow your truck module and the trailer unit to become compatible with one another.

 

[trailertrawlerkismet]

Another thing I recall from when we set up our 2011 GMC and 2012 ezloader trailer when they were both new. We have the HD trailer package with 2 batteries, etc and it seems there was a wire or set of wires (pre-wired from the factory but not connected) that needed to be connected before the factory installed brake actuator could activate. This may have changed since we bought our truck but you should check your owners manual. Let us know what the outcome is.

Jim F

 

[Scuffy]

Our truck when purchased new in 2009 had no separate 12 vdc power to feed the brake controller at the trailer plug except for what fed the lights. The wiring was there but it was not connected as it came from the factory. We had a Carlisle Hydra Star unit on our former trailer and had to have a HBA CAM (control adapter module) installed on the trailer to trick the trucks controller so it would think you actually has all electric brakes and work with the factory Chevy controller. If you are using a Hydra Star system they show on the site the are required from 2007 to present. Everything worked fine with the factory brake controller after that. Our current trailer has a BrakeRite controller pulled by the same 2009 truck did not require the CAM adapter. It worked normally from the git go.
You can research different brake controllers on the http://www.etrailer.com site using the search box when you get to the site.

 

[Levitation]

My 2011 Silverado with integrated brake control does not operate my trailer brakes.
The problem is that the new electrohydraulic controllers on the trailers do not present a low enough resistance (load) to the to the integrated controller to let it know there is a brake hooked up.
There is the adapter that most trailer repair places are familiar with that you can add (expensive for what you get) .
I'm a cheap bugger, so I just bought a replacement brake light (housing plus bulb) for a trailer from Wally World and wired it across the two wires going to the trailer's brake controller. The extra load of that bulb is enough to signal the integrated brake controller to operate.