OK pull the door panel off and in the lower left hand part of the door, pull the plastic moisture barrier off about 1/3 from lower left corner and you will see 2 wires running from front to back up and then to left tap on the door frame and it will rattle. Silicon this and silicon the plastic flappy thingy back on. also I pulled the speaker out (when truck was new) and found that a speaker lead (the one from plug that plugs into speaker and goes through speaker cone was pushed into the cone itself and vibrating just pulled it away!