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d1h

Indiana

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Posted: 05/25/21 08:27pm Link  |  Quote  |  Print  |  Notify Moderator

Recently bought a Chevy truck with the built in brake control. My question is what is the best setting for the gain? I'm towing a 27ft TT.

Grit dog

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Posted: 05/25/21 08:31pm Link  |  Quote  |  Print  |  Notify Moderator

Nope. You need to test it and adjust it until correct.

* This post was edited 05/26/21 12:04am by Grit dog *


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Posted: 05/25/21 10:04pm Link  |  Quote  |  Print  |  Notify Moderator

d1h wrote:

My question is what is the best setting for the gain?

Set it to a high setting. If it's from 1 to 10, try 8. While driving 55+ mph downhill, get on the brakes hard.
If you can clearly see the side of the trailer in one of your rear view mirrors, turn the gain down.


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stickdog

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Posted: 05/25/21 10:18pm Link  |  Quote  |  Print  |  Notify Moderator

Good to have an empty parking lot where you can get up to 20mph with gain set at six.
Jam on the brakes if they lockup nock it down a number amd try it again. If they didn't lockup take it up a number.
Whay you want is maximun braking without lockup


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bgum

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Posted: 05/26/21 07:41am Link  |  Quote  |  Print  |  Notify Moderator

stickdog wrote:

Good to have an empty parking lot where you can get up to 20mph with gain set at six.
Jam on the brakes if they lockup nock it down a number amd try it again. If they didn't lockup take it up a number.
Whay you want is maximun braking without lockup


This is correct.

JIMNLIN

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Posted: 05/26/21 08:29am Link  |  Quote  |  Print  |  Notify Moderator

I pull a 10k trailer with the wifes 2016 1500 chevy with built in brake control. I've found 3 to 3.5 gain works great. More gain = brake lockup and flat spotting the tires.
On all my new or used trailers I remove all clam shell type wire connectors and solder those connections. I also add some type of sealant like a 35 year siliconized caulk or a pure silicone/etc in the hole around wiring where it goes into the axle. I then check to make sure their getting proper amps.
I've had trailers that had 12v at the magnets but very little amps....and had poor brakes.


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Lwiddis

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Posted: 05/26/21 02:41pm Link  |  Quote  |  Print  |  Notify Moderator

Your setting isn't right for me. My setting isn't right for you. Agreed...test it and reset until it works right.


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ssthrd

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Posted: 05/26/21 04:18pm Link  |  Quote  |  Print  |  Notify Moderator

stickdog wrote:

Good to have an empty parking lot where you can get up to 20mph with gain set at six.
Jam on the brakes if they lockup nock it down a number amd try it again. If they didn't lockup take it up a number.
Whay you want is maximun braking without lockup


Like this. ^

Keep testing till you get it right. Good idea to pull test every time you hook up. Keep in mind that a different trailer will probably have a different gain setting.


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deltabravo

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Posted: 05/26/21 06:04pm Link  |  Quote  |  Print  |  Notify Moderator

d1h wrote:

Recently bought a Chevy truck with the built in brake control. My question is what is the best setting for the gain? I'm towing a 27ft TT.


No one can answer the question except you.

There are too many variables involved to make it a universal, one answer fits all terrain, all weights, all lengths, all type of loads hauled.

Answering your type of question is also like trying to provide an answer when someone asks "my fuel gauge reads 1/2 tank, how much longer can I drive?"

Start towing. Adjust it until it gives adequate braking for your trailer.

But don't start driving and jam on the brakes so the trailer brakes lock up. That will flat spot your tires. I always start with the setting somewhat low and dial up as needed when I get a new tow vehicle or new trailer.


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mtofell1

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Posted: 05/31/21 09:02am Link  |  Quote  |  Print  |  Notify Moderator

Yep, trial and error. I've been towing a bunch of different trailers with my Ram and it's interesting how much variation there is for the best setting. Just lots of moving parts (weight, size/condition/ability of trailer brakes, etc.). I was doing some gravel runs recently going between an empty dump trailer (about 2K) and full of gravel (about 10K) and I was going between 2 and 6.

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