I have the 2014 Sierra All Terrain SLT with towing package but NOT the max towing package. I want to add an aftermarket brake controller but cant find any of the wiring under the dash. I have watched videos and read instructions for late model GMC's up to 2013 but the wiring under the dash looks nothing like the videos. I also dont see any 12v wiring under the hood for a trailer brake either.
Has anyone hooked one up yet to their 2014?
Edited by jeffreydc, 30 July 2013 - 12:18 PM.