Location of Factory Tow Package Wire Bundle to Install a Brake Controller on a 2008 Chevy Avalanche
Question:
I have a 2008 Avalanche with factory tow package. Your article said that my vehicle already has the wire harness under the dash for a controler but I cant find it. Could it be that this wire harness has been removed by the previous owner? There is an empty spot in the junction box where other wire harnesses are plugged in under the dash at the firewall. Could this be where the controller pig tail was plugged in?
asked by: Roly P
Expert Reply:
On a 2008 Chevy Avalanche with a factory installed 7-Way trailer connector, there will be a wire bundle that is hardwired into the vehicle so it is unlikely that the previous owner removed the wire bundle.
Basically, you are looking for a bundle of wires held together with a white tag. This bundle is tucked up under the dash. I have linked a video on a 2013 Avalanche that should help you locate the bundle. Even though it is a newer model the general location and appearance of the wire bundle you are looking for is still pretty much the same.
You would then follow the FAQ article you mentioned to install the brake controller which I have also linked for you for reference.
