Troubleshooting Redarc Tow-Pro Liberty Trailer Brake Controller Not Calibrating On 2017 GMC Yukon XL
Updated 02/21/2022 | Published 02/20/2022
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Question:
I just finished installing the tow-pro liberty on my gmc yukon xl and when I push the button the blue light comes on so it has power, but when I drive to calibrate it the button doesnt flash green/blue so Im not sure if its all set up or not.
asked by: Mike G
Expert Reply:
The Redarc Tow-Pro Liberty Brake Controller # RED24FR will not always calibrate unless it has a trailer connected. It seems to vary based on the vehicle as not all the trailer systems will work when a trailer is not connected to the 7-way on your 2017 GMC Yukon XL.
Since you tested the controller by pushing the button you know that it does have power going to the unit, and a good ground. Pushing on the brake is what will begin the calibration process when you have a trailer connected. If you do not get any lights when pushing on the brake pedal as you are driving with the trailer connected you may have a bad brake switch or faulty Plug-and-Play Wiring Harness # 331-TPH-010. A Test Light # PTW2992 will allow you to ensure that you are getting power to the red wire on the harness from the brake switch.
Product Page this Question was Asked From
Redarc Plug-and-Play Wiring Harness for Tow-Pro Trailer Brake Controllers
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Redarc
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