'04, cc/lb 6.0
I get in the truck and the dome lights come on, key the ignition and they stay on though they should go off, start truck and they still stay on until I reach 5 mph. Door ajar light is illuminated on the dash.
If the truck is off and I open the drivers door, the domes will come on, they will not come on if I open the other three doors.
I just replaced the switch on the drivers door and no change.
I held the trip button and started the engine. I kept tapping the button until "door 40" came up. When I opened the drivers door it would change from 40 to CO. When I opened the other doors, it would stay at 40. I did notice that once I had the drivers door open and completely off the latch and my hands off the door handle, I would move the door and it would then change from 40 to CO. At this point the latch switch is out of the picture. So if i move the door slightly open/close it would switch from 40 to CO when the door is nearly closed.
Is there another switch or sensor somewhere near the hinges?

 

Seems like a broken wire in the harness near the hinge may be your problem.
Check for continuity in the switch wires as the door is opened/closed.