How to Install a Trailer Brake Controller on a 2008 Chevy TrailBlazer
Published 10/08/2014
Question:
I did not see a video for this exact year of Trailblazer but by the looks of the vid for the 2006 it looks like the same procedure. Is it? if so, is that is all that is needed or is there something under the hood that needed to be done as well. My truck does have the factory tow package already installed.
asked by: Mark
Expert Reply:
Your 2008 Chevy Trailblazer will have the factory wiring to connect a brake controller under the dash, to the left of the steering wheel, held together with a white tag. The tag should list the functions for the wires.
It should be as follows:
GM red/black to brake controller black for 12 volt power
GM white to controller white for ground
GM light blue/white to controller red for input from brake switch
GM dark blue to controller blue for output to trailer brakes
GM orange not used
There may be some connections that you will need to make under the hood to make everything fully functional. I have included a link to the right to a help article that explains this. The video you mentioned, which I have also linked, will be basically identical for your 2008.
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