I had the same problem, 2024 chevy high country and new momentum toy hauler.
Drove from michigan to sheridan wyoming with trailer brakes going in and out.
Had dealers in Des moines, north platte and loveland CO that could not fix the problem.
Then while i was in sheridan wyoming the mechanic found a bullatin #23-NA-113 that states all 2024 2500 and 3500s have an issue if you trailer has solar panels.
I unplugged my solar panels and have no problem since.
That was around July 15 and now its sept 13th and have been traveling all this time.
Can't believe till this date they have not solved this problem.
Rick