How Does Brake Controller Install in 2017 GMC Savana Van

Updated 03/28/2018 | Published 03/27/2018

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Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer Brake Controllers

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$57.13

Question:

Just received the P3 electronic brake controller for my 2017 GMC Savana van with Factory tow package. What I open the instructions it stated that there was an oem wiring harness that was available? Can you help

asked by: Mike O

Expert Reply:

For some vehicles there is an install harness that will allows for a quick brake controller install, but not all vehicles come equipped with this. Your 2017 GMC Savana does not have this and you'd have to hardwire in a controller.

Vehicles with the 7-Way tow package have the blue output brake wire already ran from the back to the front. It is located under the dash near the emergency brake pedal. Some models will require a wiring kit to run wire to the battery. This may require drilling a hole in the firewall to run the wire. You may use kit # 5506 which includes 20, 30, and 40 amp breakers.

You'll then need to test the wires that lead to the brake pedal of the vehicle for voltage when the brakes are applied. That will be the correct wire to use for the red wire of the controller.

expert reply by: Jameson C