Can A Factory Trailer Brake Controller Be Added?

snowpromod · October 27, 2008

Hi,

We just picked up a 2008 GMC Sierra 1500 and would like to know if a factory brake controller can be added? The dealer says "no", is this 100% accurate! The site is great and I have learned a lot from looking around! Thanks

MS3DALE · October 27, 2008

He is correct,It cannot be added.

We've discussed this many times....There are too many parts that are either different,or that need changed out.

The brake master cylinder,booster & chassis wiring harness are just a few of the parts that are different.

You would also need to add the switch,brake controller module,relay & dash trim piece to just name a few of the new parts needed.

Your truck also must have Stabilitrak,You also would need to get the BCM reprogrammed,And thats if the dealer would be willing to try and reprogram it,most won't due to liability issues.

Outbacker · October 27, 2008

Rather then going with the factory controller, I would recommend the Tekonsha Prodigy brake controller. Probably cheaper then the factory one, but more reliable. I have not used a factory one, but I have never had an ounce of trouble with the Prodigy.

irengineer · October 27, 2008

PI regarding adding ITBC

Adding_ITBC.pdf

snowpromod · October 27, 2008

Thanks - it looks like an aftermarket unit!!!

elcamino · October 27, 2008

I am going to have one installed on my 2008 also. I was told to make sure its a "Proportional" type as those are the best. Such as the Tekonsha P3 and they have direct plug in wire harness's for new GM trucks according to advertising.

Gixxer188 · December 18, 2008

Odd, I had the techs at the dealer I work for look this up the other day on gmdealerworld and they say just the opposite of what you all have been saying.

They say that you can't install an aftermarket control and that you have to install the GM ITBC.

mforsland · January 26, 2010

I installed one in my 2007 New body Silverado.

Here is a how to video that i found and used. It works great!

http://www.etrailer.com/tv-Brake_Con...MC_Sierra.aspx

alaska511 · January 27, 2010

Odd, I had the techs at the dealer I work for look this up the other day on gmdealerworld and they say just the opposite of what you all have been saying.
They say that you can't install an aftermarket control and that you have to install the GM ITBC.

Yeah they were wrong. As stated above, we all went through this on my previous '07, and it isnt possible. I went with the P3, the wiring is right there below the dash. Works great.