Is Carlisle Control Adapter Module # HBA-CAM Needed on 2015 GMC 2500HD with Factory Brake Controller

Question:

Do I need to install this module on a 2015 GMC 2500HD with factory IBC? The Carlisle Hydrastar comes on and works well when I use the manual slide switch.While driving using the foot pedal not very good if any. Sitting in a parked position with brake pedal depressed hard the hydrastar does not come on. I own a 2014 Mobile Suites with Mor/Ryde electric over hydraulic. In the past I have always used the P3 and disregarded the IBC but the 2015GMC doesnt appear to have wiring provisions. Thankyou

asked by: Dalton C

Helpful Expert Reply:

Due to the problems that you are currently having while towing your 2014 Mobile Suites with Mor/Ryde electric over hydraulic brakes, I recommend installing the Carlisle Control Adapter Module, # HBA-CAM. The factory brake controller on your 2015 GMC 2500HD is not compatible with the electric-over-hydraulic brake actuators on your trailer and installing the adapter will correct this.

As for the Hydrastar not coming on when the brake pedal is depressed at a sitting position, this is due to the fact that the factory controller is proportional and if the truck is not moving it won't send a signal to the brakes.

I spoke with my contact at Tekonsha and if you are still interested in using the Prodigy P3 Trailer Brake Controller, # 90195, like you have in the past, you will need to use the Plug-In Wiring Adapter, # 3016. In order to bypass your factory installed controller, you would just need to cut the blue wire on the plug-in brake control harness and connect it to enough 12-gauge blue wire to reach the rear of the truck. At the 7-way trailer connector at the back of the truck, you will cut the blue wire approximately 4 to 6 inches from the connector and connect it to the blue wire that was run from the brake control wiring harness.

expert reply by: Leah S

Marv T.

5/31/2020

Just purchased 2015 Chevy 3500 getting ready for first trip. 2004 jayco designer 32foot electric over hydrulic brakes. Before I found out the hard way is it a good Idea to put the actuator on

Chris R.

6/4/2020

Based on my research, the factory brake controller for the 2015 Chevy Silverado 3500 does require the Adapter Module # HBA-CAM for use with the HydraStar actuator.