I have a 2004 F150 that won't go into 4wd,when I put it in 4wd I hear a grinding noise coming from the drivers side. One person said it was the actuator and someone else says it's the solenoid. but after reading this post I am thinking it may be the solenoid and not the actuator, also everyone says that if it were the actuator it would make noise when it is in 2 wd, what does everyone here think. going to call the dealer tomorrow. But I am also starting to think the guys here know more then the dealer. Thanks in advance for the help.