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

Question

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

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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.

expert reply by: Evangeline M

0

Dexter Adapter Module Wiring Diagram for DX Actuators
(click to enlarge)

Answer 1

The newer factory brake controllers don't have many issue when used with electric over hydraulic brakes. The older models would not work at all. That said, in order to ensure better compatibility it would not be a bad idea at all to install an…

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Answer 2

The integrated brake controller of your 2022 GMC Sierra 3500 has a hydraulic mode which would allow it to work with electric over hydraulic actuators without needing an adapter. With that said if for some reason the controller wasn't recognizing…

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Answer 3

The replacement brake pads you need are determined by the caliper that you have on your trailer. The Kodiak Ceramic Brake Pads #K250CP fit any Kodiak caliper with the 250 stamped on them. If you have a different caliper and/or a different sized axle…

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Answer 4

All the brake controller needs to sense a trailer connection so that you can test it is a slight amperage draw on the output circuit. For that you can use a circuit tester like the part #PTW2993 with one pin grounded and the other on the output pin.…

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Answer 5

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…

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Answer 6

To determine why you do not have any power on the blue brake output wire, I recommend starting at your brake controller. First, make sure the brake controller is on and receiving power. Most brake controllers have 4 wires, blue (brake output to…

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Answer 7

As you can see on the attached photo, the wiring diagram for HydraStar Adapter #HBA-CAM shows there can be a 25-40 amp circuit breaker in-line with the black wiring which goes from the battery's positive terminal to the adapter. I would stick…

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Answer 8

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

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Answer 9

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 10

The best brake controller option to go with is one that activates the brakes proportionally instead of time delayed. A proportional brake controller will activate the trailer brakes at the same time and with the same intensity as the tow vehicle…

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Answer 11

I sure can Bob and thanks for the information! Since you have a Lippert 3,500 lbs axle you'll be able to use the Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles item #AKHD-545-35-EZ-K, you were looking at. These have a 5 on 4-1/2 lug nut…

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Answer 12

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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

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