Brake Controller Wiring Harness for 2015 GMC Sierra 1500 and Curt TriFlex Brake Controller


2015 GMC Sierra 1500 w tow package Which adapter to run with curt triflex 51451 or 51452?


Expert Reply:

For your 2015 GMC Sierra 1500 and Curt TriFlex brake controller # C51140 you will need wiring harness # C51451 to plug the controller into your truck. I have linked videos and instructions for both parts for you.

expert reply by:
Michael H

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