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Old 06-07-2009, 04:33 PM   #1
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2007 27' Classic FB
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2009 Yukon 2500 Integrated brake controler

I parked and winterized my 2007 27 FB classic last September 2008. In December I purchased a 2009 Yukon 2500 with heavy duty towing package with the GMC integrated brake controller. The trailer had been doing fine with a Prodigy controler (which I still have) when I parked it. Yesterday I did a test hook-up to make sure the Airstream and Yukon were compatable. The intergrated controller did not recognize that a trailer with electric brakes was hooked up. Other connector functions (turn signals and running lights) were fine. The controler would not engage the brakes in any transmission setting, gain setting, or with the manual lever. In short, I don't have any trailer brakes. Needless to say, I parked and un-hitched.

My first stop will be to have the integrated brake controller checked out by a GMC dealer..... hoping that I still have one in business under th "new GM." If GMC says there is nothing wrong with the truck, what next??

Does anyone out there have any experience, good or bad, with similar rigs? Any information will be more than I have now.
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Old 06-07-2009, 04:42 PM   #2
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My Silverado had to have the tow wires and fuses under the hood connected. There were two dummy fuses, and I think 3 wires inside the fuse box.
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Old 06-07-2009, 05:22 PM   #3
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If your Classic has disc brakes, my understanding is that they will not work with the built-in brake controller.

BUT my Safari does not have disc brakes, and it likewise was not recognized by my '08 GMC 2500 pickup, until I connected two wires to the fuse box. Once I did that, the built-in controller worked perfectly. It is terrific - it reads actual master cylinder pressure and applies trailer braking in direct proportion (depending upon the gain setting if course) to the amount of pedal pressure you are applying. Perfect.

The GMC dealers I contacted (including the one I bought it from) were supremely unhelpful and ignorant about this situation. I will attempt to locate the information I found about this setup ... if you will PM me with an emial address, I will send it to you if I can locate it.
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Old 06-08-2009, 08:25 AM   #4
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2007 27' Classic FB
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2009 Yukon 2500 intergrated brake controller

Any details on what re-wiring was necessary would be appreciated.
Thanks, Buddy .... evsjr@skybest.com
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Old 06-08-2009, 08:32 AM   #5
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add me to the list, I have a new Sierra and haven't hooked the Airstream up to it yet. thanks.

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Old 06-09-2009, 12:28 PM   #6
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2009 25' FB Flying Cloud
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How do I start a new discussion?

Sorry to barge in here.
How do I start a new thread?

We just bought a 2009 Flying Cloud 25FB.
We emptied all the batteries yesterday on a campground (not intentionally).
Does anybody know where all the fuses are located.
We found a box under the bed.
Any other locations?

The manual for the Flying Cloud is kind of generic.
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Old 06-09-2009, 12:52 PM   #7
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If it is like the 2007 model Gm products, it will not work it...GM put out a bulletin that I can email to you...you will more than likely have to put your Prodigy back in.

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Old 06-09-2009, 01:25 PM   #8
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GM Prodigy fix is available and works.

Fellow Streamers,
Had the same problem last year but now use my original Prodigy unit with my 2008 GMC Sierra 2500. Works great.
I did a search of trailer brakes and GMC trucks online. Found a link to GMC/Chevy trucks forum that had a step by step fix for this.
As noted, there is a dummy fuse that needs a full fuse that just needs to be inserted under the hood in the fuse box.
There is a wire-set dead-ended under the dash that simply needs to be spliced into your Prodigy unit. As I remember it, the colors do NOT simply mate up. There is a specific sequence.
Iwill see if I can find it again for ya'll.
It is a easy to follow, 1/2 hr project. Can Do...
Oh and go GM, the Heartbeat of America will rise again...waiting for the new 2011 Cheyenne!
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Old 06-09-2009, 01:41 PM   #9
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silver-cloud. all the fuses are in that box, but why are you looking for the fuses?
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Old 06-10-2009, 12:00 AM   #10
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Try this link for a fix on your brake issue.

Try this site on e-trailer.com
this link is for new gen GM trucks and your own controler. I think at the bottom of this site, there is another link for other pickups.
Hope this helps. worked for us!


Brake Controller Installation on a 2008 GMC Sierra and Chevy Silverado

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Old 06-10-2009, 09:42 AM   #11
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2007 27' Classic FB
Todd , North Carolina
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Yukon integrated brake contoller

Interim Report: Took Yukon to dealer yesterday (06/09/09) and dealer found that ITBC was not "hooked up." Dealer hooked up power and stated that controller was now sending through blue wire. Now, since my 2007 27 ft. FBR Classic with disc brakes is stowed about 150 miles away in the NC mountains, it will be a few days before I can test whether anything has really been fixed.

Will post progress. Thanks for info on installing Prodigy. I may in the end be forced to abandon the GM integrated system and use the Prodigy.
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Old 06-10-2009, 10:40 AM   #12
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Prodigy trailer brake controller. Also emptying of batteries.

Thank you for all your responses.
I kind of rushed to write that message.

First:
We bought the trailer 2 weeks ago.
2009 Flying Cloud 25FB.
Had to get another vehicle. Our 1997 Tahoe was just not strong enough.

We bought a 2005 Chevrolet Silverado 2500HD.
We had our Prodigy trailer brake controller installed.
The brakes work fine, but I am not sure if it charges the batteries of the trailer. I will read the article somebody mentioned here.

Then, all the outside lights are on on the trailer when it is connected to the truck.
Before we were able to turn the lights on and off by turning off the car's headlights. The daytime running light did not affect it. (we had a 1977 Airstream Argosy before).

When we were camping this weekend the batteries slowly drained.
We were hooked up to a 110V power source.
All 110V power stuff worked, but the batteries did not seem to charge.
We ended up turning off everything in the trailer including the fridge. (The little display uses a little power).

We then drove home. Brakes worked!
Connected the batteries to our battery charger at home and now they are almost full.

The reason I was asking for fuses is that we were worried that a fuse on the converter blew or somewhere else. The ones we can find are all o.k.

At the campground we belatedly checked the polarity and it was wrong when we were plugged in with the 30 Amp plug. That is why we were worried about the converter.

Sorry for the novel.
But that was what happened.
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Old 07-02-2009, 05:06 PM   #13
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Quote:
Originally Posted by AirsDream View Post
If your Classic has disc brakes, my understanding is that they will not work with the built-in brake controller.
...
I can't find it, but someone said that the reason the controller won't work with disk brakes is that it is looking for the characteristic impedence of the magnets. If it doesn't find them, it thinks the brakes are kaput.

A possible fix would be to wire two electric brake magnets in parallel with the input to the hydraulic pump--the controller would then see a "normal" electric brake system. The magnets could be housed with the pump and the benefit is, they would never wear out!

Zep
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