Gm Power Door Lock Troubleshooting

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.

Gm power door lock troubleshooting. Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch. For vehicles equipped with door lock cylinders the door can still be opened using the key. Power door locks that do not function are another common symptom for a problem with the door lock relay. Http amzn to 2nxjdrw gm tsb 032703 passenger door module recall for remote keyless entry door locks and power window video r.

However vehicles without door lock cylinders will not be able to lock or unlock the doors until power is restored. Inspect the fuse that protects the door lock circuit to ensure it is not blown. An inoperative power door lock can be caused by the switch solenoid wiring problem or mechanical problem within the linkage of the affected door. Unplug the door lock actuator electrical connector.

If all of the door locks are inoperative start your diagnosis at the fuse box.