Using Different Adapter Modules for EOH Brake Actuator on 2008 GMC Sierra

Question:

Hi, I have a 2008 GMC Sierra 2500 with integrated brakes. i would like to install an Electric Over Hydraulic Actuator Adapter Module directly to the IBC for compatibility with all trailers. I am wondering if there is any reliability difference between Dexter DX35FR and HBA-CAM for Michigan with salty roads? I have seen reviews of people installing directly to their truck and also one of the QandAs from Conner L saying that the adapter modules are not brand specific. Also would you have schematics for my pickup and where to find the brake signal wire?

asked by: Nick S

Expert Reply:

The adapter module itself is not brand or make/model specific. While it would be nice to pair the Dexter Adapter Module # DX35FR with the Dexter DX Series Electric Over Hydraulic Brake Actuator # K71-651, you can also use the HydraStar # HBA-CAM instead. Either will work if you're trying to use it with different trailers, although getting a brake controller with an EOH mode like P3 part # 90195 would be more ideal.

As for reliability difference, I haven't heard anything yet comparing them when it comes to salty roads. The main difference is that HydraStar # HBA-CAM has a larger user base and support and the Dexter module # DX35FR is much newer product recently released by Dexter.

While we don't have your truck schematics, we do have videos when we do install brake controllers like the one I attached below installing the Tekonsha Prodigy P2 # 90885 on a 2008 GMC Sierra. I also attached the wiring diagram for the Dexter Adapter Module # DX35FR to give you an idea of where to wire it in. It will be a different process if you're wiring it directly to your IBC, but the brake controller video explains the general wiring area in your truck.