Non Working driverside power window 86 GMC

Have you check connection wireS, connector contact , finally the control switch ?
Using contact cleaner to clear dirt at connector, checking connector pins as we'll.
the wireS maybe broken ..

FIRST MAKE SURE YOU DID NOT LOCK THE WINDOW, BY RELEASING THE BUTTON, THEN REMOVE DOOR PANEL ON PASSENGER SIDE , UNPLUG WINDOW MOTOR, AND TEST FOR POWER AND GROUND AS SOME ONE PUTS THE WINDOW DOWN FROM BOTH SWITCHES, IF POWER AND GROUND IS THERE REPLACE MOTOR, IF NO POWER THERE CHECK SWITCH, POSIBLE BAD SWITCH, BUT IF YOU SUSPECT WIRING , CHECK THE DOOR JUMB ON DRIVERS SIDE, INSIDE THE RUBBER BOOT MAY BE ONE OR MORE BROKEN WIRES , REPAIR THEM. NORMAL

sounds like driverside button cluster

see the diagram and troubleshooting. God bless you

see for dirty, corrosion, oxide, bad contact, loose connector, switch faulty or dirty or bad contacts, motor faulty, LUBE in the system.

The switch should pop out of the door panel using a flat screw
driver in on cluster that holds all the window switches. Then
you can rmove the switch you want easily. Just be gentle when
prying the cluster out of the door, and the switch out of the cluster
as not to damage the holding clips.

the door problem sounds like the door pins and bushings are worn out. this should be fixed asap because if it is let go the pin will cut into the hinge itself and then they may also need replaced. hope this helps!

Take The Driverside Control panel Off The Door,And Check Conection On The Main Switches,These Vehicles Have Locks On Them, And If They get loose The Stop Working,Also Check The Little Switch Towards The Front of Panel,It Also May Be Loose,Use Caution,The Clips Are Fragile..

Remove the door panel, locate power window motor and unplug. With a test light or meter, check for voltage at the plug while pushing window switch. You will see voltage at one wire to ground for up and the other wire to ground for down. If you have voltage at the plug, replace motor. If no voltage, check switch and wiring. Switch is probable cause for no voltage at motor plug.

look for a 30 amp circut breaker in location # 62 in the power distribution box in the engine compartment

need window regulator