Cadillac CT62018 Owner's Manual page 278

Charging Status
Indicator
Short Flashing Green
(From one to four
flashes depending on
charge level)
Long Flashing Green
Solid Green
Yellow (Upon Plug-in)
Yellow (For Extended
Time Period after
Plug-in)
Sound
One audible beep
Two audible beeps
None
None
None
DRIVING AND OPERATING
Action/Reason
Charging has begun.
Charging is delayed by Programmable
Charging or, if the vehicle is equipped
accordingly, by a total utility interruption via
OnStar. Charging will begin later. See Utility
Interruption of Charging (PLUG-IN Only) 0 284.
Charging is complete.
Charge cord is OK and the vehicle is not yet
charging.
Charge cord is OK, but the vehicle is not
charging. This may be due to a total utility
interruption via Onstar and charging will
begin later. The condition may also occur if
the vehicle has detected a fault with the high
voltage charging system.
See Utility Interruption of Charging (PLUG-IN
Only) 0 284 or Malfunction Indicator Lamp
(Check Engine Light) 0 143.
277