[DAB77]

the problem is most likely a broken wire in the rubber boot between the door and the door frame.A very common problem with GM cars and trucks. Remove the door panel,(you should probably wear gloves) firmly pull each wire one at a time(not a little tug)once you find the broken wire,remove the kick panel on inside of the car and pull out the other end of the wire.trim back both ends past any corrosion, solder a section of wire onto one of the ends that you pulled out,seal with heat shrink or insulation tape,thread this wire through the boot and solder and seal the other end. If you want to check the motor, remove the wire connector from the motor(or cut the wires, you can solder them back together when you are done)use 2 jumper wires , 1 will be attached to battery positive the other to a good ground. If the motor is good the window will move, if you reverse the connections the motor will reverse. please let us know what you find.