Did you ever figure it out? My 2024 is doing it with only 2500 miles.Does anyone else’s hand brake sound like there is a loose bolt or metal bracket rattle or make a noise when they are disengaging. Mine just started to about a week ago. I guess I’ll give the dealership a ring.
Mine will give the metallic rattle when it's in the disengaged position (down). When it's engaged, there is no rattle. Will go take a look later today.When it’s cold out the brake doesn’t have the same resistance when it engages/disengages-in the latest case it was 10-20 F and in a few feet of snow. Once the truck was running for a bit and warming up it behaved normally. Back home, where temps don’t get below 30-40 F and no snow, do not see this behavior. My hypothesis was perhaps it’s hydraulic and being super cooled causes this-fluid being to thick to move or a valve that isn’t working right for being iced over. I dont Know how it works, these are just my guesses-but it is consistent.