2010 yukon service trailer brake relay

  1. Vernon Davis

    2010 Yukon - Service Trailer Brake System

    Hello All, I looked online and YouTube on how to repair this fix for the message "Service Trailer Brake System" I took the spare tire off to locate said 'trailer brake relay module' and on my 2010 Yukon there was no trailer brake relay module there. I then purchased the trailer brake switch...

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