kevin christensen

Hello. My new 2025 3500 has ACC. I like it but it seems to glitch randomly. What it does is suddenly break when no one is in front of me. Only seems to happen on a bright sunny day. I've not experienced it at night or when it's overcast (although the days are long and sunny this time of year). For these reasons, I thought the problem may be somehow related to shadows crossing the road. However, I took a long road trip on I-90 where there were no shadows across the road and it still did it a few times. Not as often as the shady country roads I usually travel. I keep the grill camera and sensor clean, as well as the windshield. Anyone else experience this?

Does anyone know how to disengage the grade breaking on the 2024 2500/3500 HD's? On my 2019 LD LT I had to hold the Tow/Haul button on the gear shift for 3 seconds. It would reset each time I restarted the engine (or held the button for 3 seconds again). I've tried holding in the Tow/Haul button on my new 3500 for 3 seconds (inside bottom half of the Mode switch), but that just turns the tow/haul mode on/off. Also, there's no message on my instrument cluster when the grade braking is activated (I think the owners manual says there should be). Anyone have information about this? Thanks!