Charger shows E07 and will not start; often associated with tripping of the home’s breaker or RCD/GFCI device.

Safety first: If the breaker trips immediately when you turn it ON, leave it OFF. Do not repeatedly reset a tripping breaker.

Steps:

• Visual inspection: Without opening the enclosure, look for discoloration, warping, or burn marks on the charger housing and cable entry points.
• Check for water exposure: If the charger is outdoors or in a damp area, look for signs of water running down the wall or into the unit. If you suspect water ingress, do not use the charger.
• Isolate the issue: If other circuits in the panel are fine and only the charger breaker trips, the fault is likely internal to the charger.

This error typically indicates a non‑serviceable internal failure. Do not open the charger or attempt board‑level repairs. Contact GM support or a licensed electrician to remove and replace the unit.