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Adding GM factory trailer brake controller

McClain210

By McClain210
in Modifications & Accessories

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C. White New Member

C. White

Posted
Posted (edited)

Once I get home from work, I’ll get OEM part numbers for the modules. Keep in mind that this is not a simple buy a harness and plug and tow. Could you acquire a harness from a salvage yard, yes you could but then you a lot more to sort out cause as with JL1, if you have park assist sensors, the the rear camera, the magnaride suspension and so on, you’d have to get a harness from a truck that has all the same RPO’s as your truck with JL1 cause those wires would for those options would be present in the harness.

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Edited by C. White
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pgamboa
pgamboa

I’ll be adding the factory TBS to mine. Once I have the time. Lol. I’ve got the modules ready to go (to get programming done) along with my cluster. There are 2-3 modules, programming, and wiring

aseibel
aseibel

From what I've heard, the factory controller can't be added later. Need to look at aftermarket controllers.

pgamboa
pgamboa

Nope. Not yet. Module still with WAMS. No free time Sent from my iPhone using Tapatalk

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asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted
20 hours ago, C. White said:

Once I get home from work, I’ll get OEM part numbers for the modules. Keep in mind that this is not a simple buy a harness and plug and tow. Could you acquire a harness from a salvage yard, yes you could but then you a lot more to sort out cause as with JL1, if you have park assist sensors, the the rear camera, the magnaride suspension and so on, you’d have to get a harness from a truck that has all the same RPO’s as your truck with JL1 cause those wires would for those options would be present in the harness.

Even with adding the additional modules, the switch, the wiring additions (which will be significant and likely insurmountable for those that are thinking just add the switch and go) there is still the programming that will likely be impossible to resolve.

 

To date - this is still IMPOSSIBLE.

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newdude Senior Enthusiast

newdude

Posted
Posted (edited)
21 hours ago, C. White said:

Once I get home from work, I’ll get OEM part numbers for the modules. Keep in mind that this is not a simple buy a harness and plug and tow. Could you acquire a harness from a salvage yard, yes you could but then you a lot more to sort out cause as with JL1, if you have park assist sensors, the the rear camera, the magnaride suspension and so on, you’d have to get a harness from a truck that has all the same RPO’s as your truck with JL1 cause those wires would for those options would be present in the harness.

 

 

 

TLDR...GM's TSB still applies and it can't be added.  

 

$100-200 aftermarket controller beats the absolute a$$ache you've presented.  

Edited by newdude
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newdude Senior Enthusiast

newdude

Posted
Posted
12 hours ago, davester said:

No, because GM still doesn't sell the programming update that allows it to work for trucks that didn't come with it from the factory.

 

 

More than just programming.

 

Wiring (different chassis harnesses with and without JL1 brake controller), modules, programming.  

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davester Senior Enthusiast

davester

Posted
Posted
1 hour ago, newdude said:

 

 

More than just programming.

 

Wiring (different chassis harnesses with and without JL1 brake controller), modules, programming.  

Sure, but you can add all the physical stuff, wiring, switches, computer, relay, etc, the thing that stops it is the programming.

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