2017 Silverado Trailer Brakes

14853 Views 20 Replies 8 Participants Last post by Larryboy_3t5, 7 mo ago

dalypual85

Discussion Starter · Oct 31, 2017

I'm planning on towing with my new truck, and it has a 7pin/4pin in the bumper. I was informed when buying the truck, that it was already wired to the dash for a trailer brake controller. So I went out and I bought the OEM AC Delco switch and plate and installed it myself. Here's my problem- The Trailer Gain page isn't in my display. I've been looking left and right trying to figure out anything on my own.

Is this missing software that I need real help on, or does it not show up until a trailer is plugged in? Also, does a 7 pin test plug work on tricking it into thinking trailer brakes are attached?

Any help would be greatly appreciated.

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xPosTech

· #2 · Oct 31, 2017

Hmmm. My 2010 can't be retrofitted to the factory brake controler. Yours may be the same. The salesman probably meant that the brake controller harness is in the dash. Mine was blunt cut and coiled and taped under the center dash. It goes to an aftermarket controller, a Tekonsha Prodigy 3 in my case. You'll also need to wire the feed at the underhood fuse box.

Check your manual to be sure but I think you need to purchase a controller. The P3 is an excellent one. You can also check the etrailer.com website.

Ted

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xPosTech

· #6 · Nov 1, 2017

That's what I told him, Ray. The ITBC is integrated into the Stabilitrak and ABS systems. I've never heard of buying a ITBC "module" - it consists of parts in many places. But that's what I'm familiar with. Maybe GM changed some things on the new trucks.

Ted

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xPosTech

· #8 · Nov 1, 2017

I did some checking. ITBC retrofit requires RPO JL1 from factory. Since JL1 is the factory ITBC it can't be added.

https://gm.oemdtc.com/6736/pit5241d...ller-rpo-jl1-2014-2017-cadillac-chevrolet-gmc

dalypual85 check your RPO codes on the list on the door of the glove box. The official GM position is that JL1 (ITBC) is required. The factory system can not be installed on a truck without JL1 which is the factory option.

Edit: I'm guessing that the saleman used a common tactic to sell a truck. Namely, lying.

Ted

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xPosTech

· #19 · May 4, 2018

HMI?

Ted

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