Immobilizer; Immobilizer Operation - GMC HUMMER EV 2023 Owner's Manual

24 Keys, Doors, and Windows
The Driver Information Center (DIC) may
display one of these messages:
A message to service the steering column
lock indicates that an issue has been
detected with the column lock feature
and the vehicle should be serviced.
A message that the steering column is
locked indicates that the vehicle is on, but
the steering column is still locked. It is
normal for the column to be locked
during a remote start, but the column
should unlock after the brake pedal is
pressed and the vehicle is started. No
message will display during a remote
start.
A message that the steering wheel must
be turned and the vehicle must be started
again indicates that the column lock
mechanism is bound, the column locking
device was unable to unlock the steering
column, and the vehicle did not start.
If this happens, immediately turn the
steering wheel from side to side to
unbind the column lock. If this does not
unlock the steering column, turn the
vehicle off and open the driver door to
reset the system. Then turn the vehicle
on and immediately turn the steering
wheel side to side for about 15 seconds.
In some cases, it may take significant
force to unbind the column.
To keep the steering column from binding,
straighten the front wheels before turning
off the vehicle.

Immobilizer

See Radio Frequency Statement 0 374.

Immobilizer Operation

This vehicle has a passive theft-deterrent
system.
The system does not have to be manually
armed or disarmed.
The vehicle is automatically immobilized
when the vehicle is turned off.
The immobilization system is disarmed
when the vehicle is turned on and a valid
remote key is present in the vehicle.
The security light in the instrument cluster
comes on if there is a problem with arming
or disarming the theft-deterrent system.
The system has one or more remote keys
matched to an immobilizer control unit in
the vehicle. Only a correctly matched
remote key will start the vehicle. If the
remote key is ever damaged, you may not
be able to start your vehicle.
When trying to start the vehicle, the
security light may come on briefly.
If the vehicle does not start and the security
light stays on, there is a problem with the
system. Turn the vehicle off and try again.
If the vehicle will not turn on or off, and the
remote key appears to be undamaged, try
another remote key. You may also try
placing the remote key in the backup
location. See Remote Key Operation 0 7.
If the vehicle will not turn on or off with
the other remote key or in the backup
location, the vehicle needs service. If the
vehicle does turn on or off, the first remote
key may be faulty. See your dealer.
It is possible for the immobilizer system to
learn new or replacement remote keys. Up
to eight remote keys can be programmed
for the vehicle. To program additional