Charging starts normally but stops after 5–30 minutes with no error code on the GM charger; vehicle simply reports ‘Charging Stopped’ or ‘Charging Interrupted’.

Safety first: After a charging stop, carefully feel the charger enclosure and nearby wiring; if it is too hot to touch, turn OFF the breaker and let it cool.

Steps:

• Monitor temperature: Try charging at a lower current setting (if available) and see if the session completes.
• Check panel connections (electrician): Have a licensed electrician tighten and inspect all terminations on the charger circuit, including at the charger’s input lugs.
• Test at different times: If the issue occurs only when other large loads are running (AC, dryer), your supply may be sagging; discuss with your electrician.

Persistent unexplained stops often indicate internal thermal or relay issues. If lowering current and verifying wiring does not help, the GM charger should be serviced or replaced.