Brake Controller on 2020 GMC Acadia Only Sends Power to Trailer Brakes with Manual Override
Question:
2020 gmc acadia the white with blue stripe is the brake signal wire should have power when pressing on the brake but its dead no power at anytime however the trailer lights all work just no brake unless i manually press the lever
asked by: Marc
Expert Reply:
It sounds like you have a proportional brake controller, like the Prodigy P3 # 90195, installed on your 2020 GMC Acadia. Since a proportional brake controller uses an internal inertia sensor to help determine how much power to send back to the trailer brakes it won't send any power when you are sitting still. That's why you're able to apply the brakes with the manual override and not with the brake pedal.
The lights for your trailer are actually on separate circuits from the trailer brakes which is why they work when you press your brake pedal. The lights should come on when the lights on your pickup come on.
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
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