When To Charge; Plug-In Charging - GMC HUMMER EV 2023 Owner's Manual

Charging

When to Charge

When the high voltage battery is low, the
following charging messages may display on
the Driver Information Center (DIC):
CHARGE VEHICLE SOON : The battery needs
to be charged soon.
REDUCED ACCELERATION DRIVE WITH CARE :
The accelerator pedal response is reduced
and the remaining range value changes to
LOW, charge the vehicle immediately.
OUT OF ENERGY, CHARGE VEHICLE NOW :
The battery charge is fully depleted. The
vehicle will slow to a stop. Brake and
steering assist will continue operating. Once
stopped, turn the vehicle off. See Propulsion
Power Messages 0 118.

Plug-In Charging

Plug-in charge times vary based on the
battery condition, charge level, outside
temperatures, and charge station capability.
See Charging 0 109 for charge mode
selection.
Do not allow the vehicle to remain in
temperature extremes for long periods
without being driven or plugged in. When
temperatures are below 0 °C (32 °F) and
above 32 °C (90 °F), plug in the vehicle to
maximize high voltage battery life.
In extreme temperature conditions, a full
charge will take additional time.
It is normal to hear fans, pumps, and
electrical devices clicking while the vehicle is
turned off and charging.
The vehicle does not require indoor charging
area ventilation before, during, or after
charging.
The vehicle cannot be driven while the
charge cord is plugged into the vehicle.
Caution
To avoid damage to the vehicle, make
sure the charging cord plug is in good
condition, is not worn or damaged, and is
connected securely to the vehicle's
charging port. If vehicle charging is
intermittent, disconnect the cord and
inspect for damage. An excessively worn
or damaged AC or DC charging cord plug
Driving and Operating
Caution (Continued)
may result in an intermittent connection
and potential damage to the vehicle's
charging port.
There are several infotainment screens that
will display depending on the current
charging status. See Charging 0 109.
Charging Override
A CHARGING OVERRIDE/INTERRUPTION
OCCURRED message may display to indicate
that a charging override or interruption has
occurred due to one or more of the
following events:
Override of the charge settings by the
owner.
Unintended interruption of AC power at
the vehicle charge port.
Interruption of charging by the utility
company.
AC Charging
A loss of AC power alert may sound for a
short time if AC power is lost for over
one minute. This sound alert can be turned
off. See Charging 0 109.
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