Troubleshooting Prodigy P2 Brake Controller Not Working with Disc Brakes

Updated 11/03/2025 | Published 01/24/2025

Question:

Hello. I have a 2004 Chevy avalanche 2500 that has a brand new prodigy p2 brake controller that I just installed. For my trailer it didnt have brakes on it so I installed the Kodiak disc brakes and I converted it to a 7 way from a 4 way. I have the etrailer junction box for the 7 way along with the hydrastar 1600 psi brake actuator. All components are brand new and is wired correctly. My issue is that I only get a click noise from the actuator. I did the battery test and the actuator works during the test. My brake controller shows gains when I hit the brakes but still just the click. I see that hydrastar has the adapter module but my truck never had a factory tow package on it in the first place. Hopefully its something simple that Im overlooking but any advice with this should help. Thank you

asked by: Jeremey

Expert Reply:

Hey Jeremey, did you put the P2 # 90885 into hydraulic mode? It needs to be in this mode to work with electric over hydraulic actuators like what you have. Check out the picture I attached with instructions on how to do this and let me know if that takes care of it.

expert reply by: Jameson C

P2 Hydraulic Mode Instructions
(click to enlarge)

Jameson C.

11/3/2025

Hey Jeremey, did switching the Prodigy P2 into hydraulic mode get your Hydrastar actuator working properly? Your update could make it easier for the next person setting up a similar brake system.