All electricl door locks are not working on a 1999 4WD suburban what should you check for first have clicking sound and can see some movement of the electric locks?

Here are some things to check for when all the electric door locks are not working on a 1999 4WD Suburban despite clicking sounds and visible movement of the electric locks:

1. Check the Fuses:

- Locate the fuse box, which is usually under the dashboard on the driver's side.

- Check the fuse labeled "Power Door Locks" or something similar. If this fuse is blown, replace it with a new fuse of the same amperage rating.

2. Check the Door Lock Switch:

- Inspect the door lock switch on the driver's door. This switch is responsible for activating the door locks when you press the lock or unlock button.

- Look for any signs of wear, damage, or corrosion on the switch. If necessary, replace the switch.

3. Test the Door Lock Actuators:

- Disconnect the wiring connector from one of the door lock actuators.

- Use a multimeter to check for continuity between the two terminals of the actuator. If the actuator is working, you should get a reading of close to 0 ohms.

- If the actuator is not working, you will need to replace it.

4. Check the Wiring:

- Inspect the wiring harness that runs from the door lock switches to the door lock actuators. Look for any signs of damage or corrosion.

- If you find any damaged wiring, repair or replace the affected wires.

5. Check the Power Supply:

- Check that the door lock actuators are getting power. Use a multimeter to test for voltage at the wiring connector of one of the actuators.

- If there is no power, you may have a problem with the wiring or the power distribution module.

If you have checked all of these things and the electric door locks are still not working, you may need to take your vehicle to a qualified auto technician for further diagnosis and repair.