I need your help to figure this one out. I have a 2023 Freightliner Cascadia, when I put the left turn signal it starts clicking fast and when its connected to any trailer it doesn't work, the light is on, but there is no flashing when activating the left turn signal.
I already tested the 7way connector on the back of the cab and I know for sure its an issue with the truck. We changed the SAM chassis, it got fixed but now it stop working again.
Has any of this happened to any of you guys? Thanks!