So that is the trouble i m having neither switch will lock the passenger side i was wondering out of the three relays what one could cause that.
Remove power door locks 1989 c he vy silverado.
Accessory power trailer wiring brake feed.
Solenoids work when 12v applied directly to the solenoid contacts.
The switch provides power to the door lock solenoids.
Unplug the door lock connectors and inspect to make sure nothing stands out.
Pull off the panel and unplug all the wiring.
Power to the switches ok switches themselves ok checked with volt meter to ensure working electrically.
Disconnect the door lever and door lock from latch.
Feed the wire harness and boot through side jamb.
1989 c1500 has power windows and door locks wont work the window and lock works with straight voltage applied several wires to the rocker switches have power to them with a test light probe i don t think this right can t find the connections after the wire leave the door i have a diagram that show a plug in connection for the wires can t find it.
Use a putty knife to carefully pry off the door panel and unclip the clips securing it.
I have installed new door actuators on both sides.
If any wiring is damaged replace them.
Accessory power trailer wiring feed.
1989 c1500 silverado 4wd electric door locks don t work.
Usual cause the power door locks utilize individual solenoids in each of the doors that activate the door lock mechanism.
Symptom summary the power door locks are all inoperative or a single door lock is inoperative.
Clips to get off have to be pushed down to get the rod off.
If the result of this does not yield any results continue to step 2.
Door panel once and then the unlock side three times.
The factory setting all doors lock none of the doors unlock.
Press the lock side of the power door lock switch in the.
Remove switch panel and inspect wiring.
Press the lock side of the power door lock switch on the.
Diagnose power door locks don t work properly.
Follow lead wire to the door lock actuator.
Remove the two phillips screws from the door pull use a flat blade screwdriver to pry out the door handle bezel.
Door panel once and then the unlock side twice this is.
Pop the window and door lock switch panel off the door handle.
Retained accessory power power mirrors power door locks power seat s ign b.