Tire Inspection - GMC Hummer EV 2024 Owner's Manual

GMC Hummer EV Owner Manual (GMNA-Localizing-MidEast-16639039) -
2024 - CRC - 3/20/23
If the turn signal lamp does not flash within
15 seconds after starting to inflate the tire,
the Air Down Mode has not been activated
or is not working.
If the hazard warning flashers are on, the
Air Down Mode visual feedback will not
work properly.
The Air Down Mode will not work properly
under the following conditions:
There is interference from an external
device or transmitter.
The air pressure from the inflation device
is not sufficient to inflate the tire.
There is a malfunction in the TPMS.
There is a malfunction in the horn or turn
signal lamps.
The identification code of the TPMS
sensor is not registered to the system.
The battery of the TPMS sensor is low.
The vehicle is not in P (Park).
The vehicle is off.
The customer did not press START after
selecting the target tire pressure in the
Air Down Mode app.
If the Air Down Mode does not operate due
to TPMS interference, move the vehicle
about 1 m (3 ft) back or forward and try
again. If the Air Down Mode is not working,
use a tire pressure gauge to confirm tire
pressure.
Warning
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
Tire overloading and overheating,
which could lead to a blowout
Premature or irregular wear
Poor handling
Reduced fuel economy for
internal combustion engine
vehicles
Reduced range for electric vehicles
Overinflated tires, or tires that have
too much air, can result in:
Unusual wear
Poor handling
Rough ride
Needless damage from road
hazards
Vehicle Care
After off-road use, inflate all tires to the
recommended pressure shown on the Tire
and Loading Information label. See Vehicle
Load Limits 0 182.
TPMS Sensor Matching Process
Learn Function
Each TPMS sensor has a unique
identification code. The identification code
needs to be matched to a new tire/wheel
position after rotating the tires or replacing
one or more of the TPMS sensors. When a
tire is installed, the vehicle must be
stationary for about 20 minutes before the
system recalculates. The following relearn
process takes up to 10 minutes, driving at a
minimum speed of 20 km/h (12 mph).
A dash (-) or pressure value will display in
the DIC. See Driver Information Center (DIC)
0 123. A warning message displays in the
DIC if a problem occurs during the relearn
process.

Tire Inspection

We recommend that the tires, including
the spare tire, if the vehicle has one, be
inspected for signs of wear or damage
at least once a month.
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