GM Brake Update: Prototype fix!

I might have a hardware solution, but I need your help testing it...

Dear Readers,

A few months ago I published an article about 2024 GMC/Chevy 2500HD and 3500HD trucks shutting down their onboard trailer brake controllers randomly. I think I know why this is happening. Please read more about it HERE.

GM knows about it…

There’s been a bulletin issued by GM on the failure in June, which appears to be related to the RV trailer having a Lithium Battery and Solar Panels which has a higher voltage than the truck computer is expecting. When that occurs the truck’s computer simply shuts off the built-in brake controller. Of course, a large trailer without operating electric brakes will be difficult to stop, especially in an emergency.

I have a prototype fix to try

I now have a prototype plug-in fix that has a high probability of working. But I still haven’t found a 2024 GM truck and trailer near me that’s having the problem. I need to test this in a real-world situation, so I can make adjustments as needed.

I need your help…

If you have a 2024 GM HD 2500 or 3500 truck and an RV with a Lithium battery that disconnects the brakes regularly, and you’re within a day’s drive of Hagerstown, MD, please contact me to discuss doing a test.

Note that I need to be there myself for the test since I’ll be measuring various voltages, so I won’t just ship you a unit to try by yourself. Once I know that it works I’ll be able to confer with GM and subscribers on a hardware fix. Please email mike@noshockzone.org to discuss.

Let’s play (and drive) safe out there… Mike