IIRC (I am getting old ), you can get to the blower wires by removing the glove box. The next time it doesn't work (and you have the time), unplug the connector and use either a test light or volt meter across the harness side to see if you have 12v and a ground. You may want to remove the glove box ahead of time just so you don't jar the dash enough to make the motor work when you remove it. If you do have voltage & a ground, then that tells you the motor is dragging. Bad motors are very common in Dakotas/Durangos of this vintage.



Tim