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Old 08-09-2016, 04:56 PM   #1
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2016 Chevy 2500HD Duramax IBTC not locking trailer brakes

I finally upgraded to a new 2016 Chevy 2500HD Duramax truck. Love it! But, I can't figure out if I have the integrated brake controller set correctly. The manual lever will NOT lock the brakes at 20-25mph as the manual says. But the manual also says if they don't lock, just set it to max (10) on the gain. I'm at 9.0, I can feel the trailer brakes working, but have never been able to "lock them". Is this how it works? Trailer is about 7,000lbs. Rockwood 2702WS Ultralite.
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Old 08-09-2016, 04:58 PM   #2
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Try this.

Hook up trailer. The auto setting has two tabs, left and right. "Pinch" them between your hand. Let off the brake (on level ground) and let the truck and trailer inch forward on its own.

When it starts going, pinch the two tabs together. When the trailer stops, that's the correct setting. It should display the setting on the DIC and be set.
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Old 08-09-2016, 05:02 PM   #3
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Can`t say either way but my 16 Ram is the same way . Set the controller @ 10 and manually slide it and not trailer wheel lock up . just feel the brakes working .
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Old 08-09-2016, 05:03 PM   #4
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Quote:
Originally Posted by BandJCarm View Post
Try this.

Hook up trailer. The auto setting has two tabs, left and right. "Pinch" them between your hand. Let off the brake (on level ground) and let the truck and trailer inch forward on its own.

When it starts going, pinch the two tabs together. When the trailer stops, that's the correct setting. It should display the setting on the DIC and be set.
That's How I set my fifth wheel in my 2015 2500HD.
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Old 08-09-2016, 05:06 PM   #5
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Originally Posted by BandJCarm View Post
Try this.

Hook up trailer. The auto setting has two tabs, left and right. "Pinch" them between your hand. Let off the brake (on level ground) and let the truck and trailer inch forward on its own.

When it starts going, pinch the two tabs together. When the trailer stops, that's the correct setting. It should display the setting on the DIC and be set.
So I think you mean the manual slider. Pinch and one side slides to the other which is fixed in place. At max "Pinch" gain says 10.0. I am going to start from a stand still, let the truck and trailer idle forward, then pinch and when the truck and trailer stop via just the trailer brakes, that's the setting. Do I have that right?
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Old 08-09-2016, 05:48 PM   #6
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Sounds like trailer brakes are out of adjustment. Mine lock up at 6 and I run at 5.


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Old 08-09-2016, 05:53 PM   #7
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I have mine set at 5 but leave the exhaust brake on.
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Old 08-09-2016, 06:25 PM   #8
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Sounds like trailer brakes are out of adjustment. Mine lock up at 6 and I run at 5.


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Not sure they are, I had a Prodigy P3 in my previous TV and they locked at 4.5, smoke and all. I ran at 3.5 to 4.0. That's what's throwing me about the IBTC. It also doesn't seem to be proportional like the P3.
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Old 08-09-2016, 06:31 PM   #9
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So I think you mean the manual slider. Pinch and one side slides to the other which is fixed in place. At max "Pinch" gain says 10.0. I am going to start from a stand still, let the truck and trailer idle forward, then pinch and when the truck and trailer stop via just the trailer brakes, that's the setting. Do I have that right?
Don't "max pinch". Just pinch together JUST until the trailer stops without your help from TV brake. That's the setting.........
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Old 08-10-2016, 06:03 PM   #10
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could there be settings on the GM like there is on my Ram 2500? Light and heavy plus light and heavy EOH? Also, brakes need to brake in if the trailer is new. Mine took several hundred miles after I abandoned the factory controller and installed the P3 to work properly.... now set on Boost 2, I can lock up the binders.
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