door lock gremlins
My thought is all the road salt this winter. My dad and I both have 02 CTDs and both of our trucks have had a simliar issue this winter. One would think that a ghost was sitting playing with the door locks. My truck would constantly lock and unlock until I pulled the fuse (10 amp for the pwr locks). This killed the overhead lights, power locks, heated seats etc as well but at least the door locks quit locking and unlocking. It started after the cold snap in Feb in Southern IN... as things started to warm we had the problems. Mine has quit after running up and down the rainy roads and hosing down the door to hopefully blast the salty residue out. Dad's didn't react as bad but still annoying. His has quit acting weird as well.
my . 02
brad