Wiring Kit to Bypass Factory Wiring on 2008 Silverado 3500

Published 10/10/2024

Question:

Hello, My 08 silverado 3500 WT has an intermittent integrated brake system issue. I randomly get the service trailer warning display. I have changed a few plug and play parts and still have issues. Do you guys have a wiring kit that would replace the factory wiring to eliminate the wire as the issue? Thank you

asked by: Austin L

Expert Reply:

Hi Austin; it sounds like you want to install a new 7-way to completely bypass the factory wiring. You can use the Universal Wiring Harness w/ ModuLite and Brake Controller Harness # 22551 you were looking at to accomplish this. As the name implies, this is a universal kit so it will work with your 2008 Silverado 3500. The 4-way functions will tie into your tail lights and the other wires will run separate from the factory wiring harness.

expert reply by: Robin H

Austin L.

10/10/2024

Thank you. Does this setup then need a separate brake controller or does it utilize the built in dash controller from factory? Thanks again

Robin H.

10/10/2024

@AustinL I'm not entirely sure how the factory one will interact but you could connect it to this setup. Sometimes they throw errors and you have to flash the computer if you try to bypass factory wiring. If you still have the # 90195 you ordered from us years ago that would work.