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  1. #1
    Jr. Mechanic
    Join Date
    Apr 2008
    Lexington, SC

    Default trailer brake controller

    I tried to look up the answer to my question but couldnt find it. On my 03 Avalanche Z71 with 7-way plug, can i just plug in some where my trailer brake controller or do i have to do some wiring? If so where do i plug it in and could someone post some pics so i could better understand? Thanks
    2003 Avalanche 4x4 with cladding 110k miles +, K&N stock replacement air filter, Skyjacker 8000 shocks, Hawks LTS pads, Summit Racing brand drilled and sloted rotors, Sylvania ZXE high & low beams, leveling kit, 285/70/r17 Michelin M/S

  2. #2


    You need to do some wiring.

    On my truck, the wires are tied up behind the knee pad trim, next to the steering column. Check your owner's manual for more info.

    We have a trailer/towing sub-forum roam around in it for additional detail.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3
    Jr. Mechanic
    Join Date
    Apr 2008
    Lexington, SC


    I tried looking in the manual but it wasnt any help to me. I did find i have a fuse in my #2 stud which lead me to believe that maybe i did have a quick connection somewhere under the dash and not just the wire hanging. I will just have to look to see if i see the wires latter. I just dont know where the connection would be if it had a plug in somewhere.

  4. #4


    here you go see if this helps...

    Installation:The Chevrolet Avalanche specific adapter has one end that plugs into the back of the brake controller while the other end plugs into the port in the black box located under the dash.
    Note: If your Chevrolet Avalanche has a factory installed hitch and 7-way connector, then all of the wires for the brake controller have already been run. If not, additional parts will be required to complete the installation of the brake controller.
    Tekonsha Prodigy Brake Controller 90185 with Adapter 3015P
    Finally a signature and Avatar! I also posted some pics in the Gallery.
    2011 2500HD Crew Cab 4X4 Z71 6Liter.
    2011 Outback Travel Trailer 260FL
    So Happy to not be on the edge of GVWR Over Load!!

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