Tire Pressure Light; Security Light - GMC Hummer EV 2024 Owner's Manual

GMC Hummer EV Owner Manual (GMNA-Localizing-MidEast-16639039) -
2024 - CRC - 3/20/23
This light comes on when the air suspension
is raised to increased ground clearance
height.
It will flash white and give an alert to
indicate that the vehicle is changing to a
higher ride height.
This light comes on when the air suspension
is lowered for easy entry and exit from the
vehicle, or when Acceleration Mode (Watts
to Freedom) is activated.
It will flash white and give an alert to
indicate that the vehicle is changing to a
lower ride height.
This light comes on when the air suspension
is in Service Mode or Alignment Mode.
See Air Suspension 0 207.

Tire Pressure Light

If equipped with the Tire Pressure Monitor
System (TPMS), this light comes on briefly
when the vehicle is started. It provides
information about tire pressures and
the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires
are significantly underinflated.
A Driver Information Center (DIC) tire
pressure message may also display. Stop as
soon as possible, and inflate the tires to the
pressure value shown on the Tire and
Loading Information label. See Tire Pressure
0 301.
Instruments and Controls
When the Light Flashes First and Then Is On
Steady
If the light flashes for about a minute and
then stays on, there may be a problem with
the TPMS. If the problem is not corrected,
the light will come on every time the
vehicle is started. See Tire Pressure Monitor
Operation 0 303.

Security Light

The security light should come on briefly as
the vehicle is started. If it does not come
on, have the vehicle serviced by your dealer.
If the system is working normally, the
indicator light turns off.
If the light stays on and the vehicle does
not start, there could be a problem with the
theft-deterrent system. See Immobilizer
Operation 0 25.
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