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Integrated Trailer Brake Controller (is there 1 or 2?)

Colorado_Ry

By Colorado_Ry
in Troubleshooting & Recalls

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Colorado_Ry New Member

Colorado_Ry

Posted
Posted

2015 Silverado.  I'm getting the same Trailer Brake Service message everyone's been getting for years.  It comes on intermittently (sometimes worse than others) when I'm not towing. 

 

I have a progression I want to go through before going to the dealer (bought used/extended warranty).  But, I do have a question about the Integrated Trailer Brake Controller underneath the spare tire.  (The part on Amazon: https://www.amazon.com/dp/B07J5LNPWT/?coliid=IL3DWP1YVFWXN&colid=11KU4XGPMZLVK&psc=0) 

 

I went under there over the weekend to remove and clean the controller.  I followed a decent video.  Didn't solve the problem.  But, the video pointed out that there are two identical controllers, one underneath the first.  I got the first one out, but I couldn't pop the clip on the second as it was turned up and away.  So, I just want to check.  Are there in fact two of these Integrated Trailer Brake Controllers under there, or is that second one actually something different.  

 

My planned progression:

1) Clean (again)/brush/grease trailer socket but this time expand the prongs a bit to make sure one isn't too close.  

2) Find and clean ground (anyone know where this should be?)

3) Top off brake fluid to max line- I saw this somewhere.  Sounds weird to me, but it's an easy step without buying parts. 

4) Remove trailer socket.  Inspect/clean backside.  

5) Replace either the controller above the spare (is it just one?) or the dash switch.  I'm 50-50 on which I'd do first.  

 

Thanks!

 

- Ryan 

 

btj_z71 Enthusiast

btj_z71

Posted
Posted

MHTook mine to the dealer last week, there was an update for the chassis control module so they did that and seemed to solve the problem, cost me $172. 

 

Well I am going back today because the same service message popped up again several times this week.  Will find out what they have to say this time around.

silveradosid Senior Enthusiast

silveradosid

Posted
Posted

friends 2014 denali does this, all he does is work the slide control back and forth a few times and the message goes away for a few months and then comes back he just does the slide thing again

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