Troubleshooting OEM Brake Controller of 2021 Chevy Silverado not Working with 2021 Grand Design

Question

Question:

I have a 2021 3500 Chev High Country with factory installed trailer brake controller. When I apply the brakes my message is 100 power but I know my brakes on my 2021 Grand Design with Dexter axles are not working. I have read when there may be a compatibility issue between the two. Your thoughts of a solution? Thanks for your input.

asked by: Tim B

0

Expert Reply:

Hey Tim, it sounds like your Grand Design may have electric over hydraulic brakes but I am not totally sure. If that's true make sure your brake controller is put in hydraulic mode. Otherwise an aftermarket brake controller that was designed to be used with EOH brakes like the part # 90885 would be a great solution.

expert reply by: Jameson C

0

Traci K.

5/5/2024

Hi Jameson I also have a 2021 Chevy 3500 High Country. I pull a 1996 sundowner horse trailer. We have nothing but problems with the Breaks not working. They are electrical. Dexter axels. Any suggestions?

Reply

Jameson C.

5/6/2024

@TraciK I'd need to hear more about the specific problems you are having to be able to troubleshoot better but most likely the problem is corrosion on the trailer wiring pins so I would try cleaning them first.

Reply

Traci

5/7/2024

@JamesonC Thanks for the reply, as I have towed big rigs for many many years, I alway keep my connection in good condition and have my trailers maintained, bearings adjusted, and lubricated. I hook my trailer up to my older Chevy truck and they work amazing. This new Chevy has been nothing but a problem. We can’t run a camper or trailer of any kind together. All we get our constant break warning. It thinks the camper should have breaks! When they put the super hitch and wired it. They had nothing but problem with breaks. We finally came up with a solution to run the camper through the trailer. To stop the constant warning signs. We have called Chevy on countless occasions. We have had may pro look at it. All they do is throw up their hands , they don’t understand. It’s been a nightmare. So when I seen there may be a new controller I have a shimmer of hope. Chevy don’t give you a answer.

Reply

Answer 1

Since the trailer was off of the ground it would not take much voltage to stop the wheels from spinning so they may be getting power but they may not be getting enough power due to a short or wiring issue. But 9 times out of 10 weak trailer brakes…

view full answer...

Answer 2

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

view full answer...

Answer 3

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

view full answer...

Answer 4

While we may have an option for you, we do not have the exact specs on your Allis grease seal part number 5013 29772. However, with the 1.6" ID and 2.5" OD measurements you provides, that is very close to our #58846. This particular grease…

view full answer...

Answer 5

On a 2005 Chevy Silverado 1500, If you are facing the front of the truck looking at the power distribution box, there will be a post at the back left side and a fuse slot near it. It is that fuse slot that you will install a 30 amp fuse. I have…

view full answer...

Answer 6

The 40 amp fuse for your 2006 Chevrolet Silverado tow package is used for the 12 volt battery charge circuit. This fuse is located toward the front of the underhood fuse box closest to the front auxiliary positive post (see photo). There may be a…

view full answer...

Answer 7

For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside…

view full answer...

Answer 8

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

view full answer...

Answer 9

The only way you could power interior dome lights on a trailer without it being connected to a tow vehicle would be to power the lights with a battery like a breakaway battery. How you choose to wire up the batteries will in the end be up to you, but…

view full answer...

Answer 10

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

view full answer...

Answer 11

We have a really great kit that comes with everything you'd need to convert your 2021 Vanleigh Pinecrest 335RLP from tandem 6k drum brakes to electric over hydraulic disc brakes with the HydraStar Disc Brake Kit w/ Actuator for Triple Axle…

view full answer...

Answer 12

The 7290 that you see is a casting number. It is found on AL-KO hubs that fit #99 spindles. I found that the bearings used are #28580 which would be the inner bearing and #25580 which would be the outer bearing. For the seal use #91030.

view full answer...

Troubleshooting OEM Brake Controller of 2021 Chevy Silverado not Working with 2021 Grand Design

Product Page this Question was Asked From

Featured Help Information

Instructions

Continue Researching