Gm Power Door Lock Troubleshooting

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Gm power door lock troubleshooting.

Inspect the fuse that protects the door lock circuit to ensure it is not blown. Gmc yukon power door lock actuators may fail 236 reports. If all of the door locks are inoperative start your diagnosis at the fuse box. Learn about this problem why it occurs and how to fix it.

For vehicles equipped with door lock cylinders the door can still be opened using the key. However vehicles without door lock cylinders will not be able to lock or unlock the doors until power is restored. If the power door lock relay fails it will cut off power to the entire power door lock system and may cause them to not function correctly. You should see the voltage polarity toggle with each switch activation.

Power door locks that do not function are another common symptom for a problem with the door lock relay.