How to Disable OEM Brake Controller When Installing Aftermarket Controller

Updated 06/23/2015 | Published 06/21/2015

Question:

I just bought a trailer with electric over hydraulic brakes and my 2013 Chevrolet 3500 brake controller doesnt see the trailer. If I install an aftermarket controller, Ill need to disable the 9em controller. How do I do that?

asked by: Daniel I

Expert Reply:

You can easily install an aftermarket controller in your 2013 Chevrolet Silverado 3500 that is compatible with your trailer's electric-over-hydraulic (EOH) brakes. The linked article illustrates the process of wiring in a EOH-compatible controller like the Prodigy P3 # 90195. If you follow these instructions you will disable the OEM controller and this change will not generate any trailer brake display messages on the driver information center. The article includes photos and a wiring guide.

You will not need to use a brake control wiring adapter like # 3025-P since the installation of the aftermarket controller will be a hardwired type, using wiring that is already provided on the vehicle as shown in the linked photo.

expert reply by: Adam R