2015 GMC Sierra Service trailer brake fix
How I fixed the trailer brake controller issue on my 2015 GMC Sierra 2500 HD.
(Also how to silent the waring alarm.)
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Blue Driver OBD2 reader: https://amzn.to/44Cuc9x
Trailer Brake control module: https://amzn.to/3K5TR2l
(Be sure it fits your specific vehicle)
Check out Part 2 Video here • GMC SIERRA Service trailer brake controlle...