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Old 02-11-2019, 08:46 PM   #21
Joe Hollars
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I'm probably the first one to get the new hydraulic disk brakes with an older truck.

Nope. We have a 2019 we bought in Nov that has the legacy package. Elec/hydr brakes and a 2011 GMC. We had to buy an aftermarket brake controller. The P3 works great!
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Old 02-12-2019, 07:49 AM   #22
AV Tech
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I ment the first one my dealer sold.
The controller they installed for me was the P3 but the Factory controller keep sending error code. Hopefully I can get my 5th wheel back in sometime in March to get the module installed so I can use my factory system.
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Old 02-12-2019, 08:06 AM   #23
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Nope. We have a 2019 we bought in Nov that has the legacy package. Elec/hydr brakes and a 2011 GMC. We had to buy an aftermarket brake controller. The P3 works great!
Joe
Joe do you have a factory break controller on your truck?

I called Dexter and talked to a engineer he said using the module is the better way to go.
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Old 02-12-2019, 08:35 AM   #24
Joe Hollars
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Joe do you have a factory break controller on your truck?

I called Dexter and talked to a engineer he said using the module is the better way to go.

I did the same thing. Called dexter. They told me the module is an option but the P3 was better. My dealer said the same thing. I went with the P3.
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Old 12-01-2019, 07:45 AM   #25
opschief
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Brake controller issue

AV Tech.... I'm having the same exact issue with my 2020 Montana 3701 LK..... I have a new 2020 GMC 2500 AT4... hookup 5th wheel up ... said service brake controller. no brakes.... tech changed fuses thought it blew a fuse. no luck. hooked my truck up to another 5th wheel but with electric brakes ... it worked... so i guess my brake controller isn't compatible with the hydraulic /electric brake set up. Did you get everything resolved? If so what did you do? I had to leave my 5th wheel at the dealer yesterday with them scratching their heads trying to figure out what was wrong. whether ir was my truck or the 5th wheel... Thanks
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Old 12-01-2019, 08:19 AM   #26
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Your truck is Different from mine you should be able to switch your truck brakes to electric over Hydraulic. Should just be a setting in your menu.
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Old 12-01-2019, 12:13 PM   #27
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trailer brakes

AV Tech, My trailer brake is for Electric braking. I looked through the menu and there wasn't any place to select electric or hydraulic. I'm thinking i need the module you were talking about to recognize the hydraulic braking. also does your 5th wheel have hydraulic breaks? and any loud noise as the hydraulic fluid is being transferred to the brakes?
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Old 12-01-2019, 01:02 PM   #28
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Screenshot_20190113-102623_Chrome.jpg
This is what I had installed on my Montana.
I have had no problems.
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Old 12-01-2019, 01:45 PM   #29
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Trailer brakes

AV Tech, Thanks I just sent a link to the RV store I bought the 5th wheel from.
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Old 01-14-2020, 01:27 PM   #30
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Brake Controller Problem

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Originally Posted by AV Tech View Post
Attachment 5140
This is what I had installed on my Montana.
I have had no problems.
We got our 2020 Monte Legacy in November. Pulled it home with our 2016 Silverado 2500HD Duramax. No brakes. Dealer told me not comparable with Chevy will need adapter. Lucky only 7 miles to home. Just got a 2020 Silverado 3500HD SAME PROBLEM.

Called mobile tech told them about HydraStars adapter they ordered it coming next week. Iíll post results.
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Old 01-14-2020, 02:33 PM   #31
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On my 2013 Ford F350, I just had to go to the DIC (dashboard) and change the setting to electric over hydraulic.
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Old 01-14-2020, 02:44 PM   #32
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Brake Controller

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We got our 2020 Monte Legacy in November. Pulled it home with our 2016 Silverado 2500HD Duramax. No brakes. Dealer told me not comparable with Chevy will need adapter. Lucky only 7 miles to home. Just got a 2020 Silverado 3500HD SAME PROBLEM.

Called mobile tech told them about HydraStars adapter they ordered it coming next week. Iíll post results.

Yes, The Dealer ordered the Hydrastar module for my GMC installed it and everything works great now. Issue resolved.
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Old 01-14-2020, 07:31 PM   #33
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Danny, yes for the '16 you would need the CAM Module, but starting with the 2017 GMs are compatible without the adapter. Had one in my '11, but pulled it out when I got the current '18.
I would check with a buddy or someone and verify that the brakes actually would on the Monty.
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Old 01-15-2020, 12:03 AM   #34
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Chevy dealer had no problem but tested with standard electric trailer brakes but not electric/hydraulic brakes. I still get ‘Connection problem-electric Brakes’ and ‘Service trailer brakes’ and ‘Check trailer wiring’. Anyway I’ll post what the tech discovers next week.
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Old 01-15-2020, 01:27 AM   #35
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My 2013 Ram also just have to change dash to electric over hydraulic. Mine says heavy or light electric over hydraulic so I am always at heavy.
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Old 01-15-2020, 06:27 AM   #36
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Brake Controller

I was told that the issue is with the newer 5th wheel that have hydraulic brakes installed may have a problem with some vehicles communicating or recognizing electric/Hydraulic brakes... I took my 2020 GMC in the local dealer and they said it wasnít a truck issues that GMC trucks recognize both electric or electric / hydraulic.... Dodge you can select on your dash one or the other.... GMC is automatic. The RV dealer had to install Hydra Star controller that matched my truck. Once that was done everything worked perfectly.
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Old 01-15-2020, 01:05 PM   #37
DannyK
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Thanks for sharing. Hope the Hydrastar adapter is the answer. Tech coming next week. I’ll post our findings. Fortunately I only live 7 miles from Elkhart and 20 from Goshen ( Keystone).
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Old 01-21-2020, 12:12 AM   #38
DannyK
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Brake Controller

Hey all...success!
RV Tech from Affinity came out today. Checked fuses and documented brake connection error messages. We disconnected my 2020 Silverado and connected his 2015 GMC... Brakes worked with his truck. So he installed the HydraStar (HBA-CAM 381-7073) actuator adaptor reconnected my truck and still got the error messages ĎNo Connection Electric Brakesí and ĎService Trailer Brakesí. We then turned the truck off and started it again. IT WORKED! I now have Electric/Hydraulic Disk Brakes. I guess once he installed the adapter turning off and restarting must have reset the brake controller. Hope the resolution to my troubles will be helpful to somebody else. Thanks to all those that gave advice to help me.
Dan
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