General Motors Connector Lock Mechanism Malfunction

GM charger intermittently fails to release the connector latch electronically (if equipped with a locking feature), making it hard to unplug.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Sticking solenoid in GM connector lock, Weak return spring, Misalignment between lock pin and handle, Faulty lock control circuit on main board

How to Fix / Troubleshooting

Safety first: Do not use tools to pry the connector out; this can damage the vehicle port.

Steps:

  • Follow release procedure: Ensure you are following the GM‑specified sequence (e.g., stop charging via app or vehicle, then press latch).
  • Power cycle: If the lock will not release, stop charging, turn OFF the breaker for 1–2 minutes, then ON, and try again.
  • Lubrication: Do not apply lubricants to the connector; they can contaminate contacts.

Repeated lock malfunctions indicate a failing solenoid or control circuit. Have the GM connector lock mechanism inspected and replaced if necessary.

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Repair Difficulty

Medium 3/5

Required Part

GM Connector Lock Solenoid / Control Circuit
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