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So my red door open light started staying on. Along with all the lights associated with the doors being opened. The lights don't always come on, but the dash lights stays. As a quick fix I just popped the bulbs out and went on my way. Tried lubing the doors. That didn't work. I started noticing it seemed to be related to when I was slowing down or turning. I thought maybe it's my passenger leaning on the door around the turns. So I inspected all the doors, they latch fine and don't feel like they're open. Last night I was riding by myself, and I realized that it wasn't anyone leaning on the door. When I would slow down, at the same spot. I would hear a click and the lights by the doors would come on, as well as the light on the back of the cab over the bed. It did it every time the whole way home. It was approx. 16-18 mph when it would click. It was the same spot each time but I couldn't really nail the exact speed and watch for deer.
So any guesses? I originally thought I'd just replace the sensors in the doors, but idk if that'll work anymore since it seems to be affected by other factors.
What year is your truck ? My 450's have the door switches on the latches inside the door. Sometimes lubing the latch fixes it, but most times it's the switch.