How to Install a Trailer Brake Controller on a 2009 Chevy Silverado
Updated 02/17/2025 | Published 04/22/2014
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Question:
which wire plug do i need for 2009 chevy truck from the brake controller to under dash
asked by: Tim
Expert Reply:
On the 2009 Chevy Silverado there is no port to plug in a brake controller. Instead GM put a tow package wire bundle under the dash. You would use the harness with the blunt cut wires that comes with the brake controller and splice into the tow package wires.
The wire bundle is located under the dash, to the left of the steering column, held together with a white tag.
The wire functions as as follows:
Truck red/black to brake controller black for 12 volt power
Truck white to controller white for ground
Truck light blue/white to controller red for brake light signal
Truck dark blue to controller blue for out to trailer brakes
Truck orange is not used
I have included a link to a help article that explains installing a brake controller on a 2009 Silverado. There may also be some connections that need to be made under the hood.
For a brake controller I recommend the P2, # 90885 because it is easy to set up, easy to use, and its reliable.
Product Page this Question was Asked From
Hopkins Plug-In Simple Custom Wiring Adapter for Trailer Brake Controllers - Chevy/GMC
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Hopkins
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Scott S.
2/16/2025
My 2009 Silverado doesn't have the wire bundle for the trailer brake controller is there a port for it