Tire Pressure Monitor System
Your vehicle may have a Tire Pressure Monitor System
(TPMS). This system uses radio and sensor technology
to check tire pressure levels. If your vehicle has this
feature, sensors are mounted onto each tire and wheel
assembly, except for the spare tire. The TPMS
sensors monitor the air pressure in your vehicle’s tires
and transmit tire pressure readings to a receiver located
in the vehicle.
Each tire, including the spare (if provided), should be
checked monthly when cold and in ated to the in ation
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire in ation pressure label.
(If your vehicle has tires of a different size than the
size indicated on the vehicle placard or tire in ation
pressure label, you should determine the proper in ation
pressure for those tires.)As an added safety feature,
your vehicle has been
equipped with a tire
pressure monitoring system
(TPMS) that illuminates a
low tire pressure telltale
when one or more of your
tires is signi cantly
under-in ated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires as
soon as possible, and in ate them to the proper
pressure. Driving on a signi cantly under-in ated tire
causes the tire to overheat and can lead to tire failure.
Under-in ation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling
and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-in ation has
not reached the level to trigger illumination of the
TPMS low tire pressure telltale.
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When a low tire pressure condition is detected, the
TPMS will illuminate the low tire pressure warning
symbol on the instrument panel cluster, and at the same
time a message to check the pressure in a speci c
tire will appear on the Driver Information Center (DIC)
display. The low tire pressure warning symbol on
the instrument panel cluster and the check tire pressure
message will appear at each ignition cycle until the
tires are in ated to the correct in ation pressure. Using
the DIC, tire pressure levels can be viewed by the
driver. For additional information and details about the
DIC operation and displays seeDIC Operation and
Displays on page 3-40andDIC Warnings and Messages
on page 3-46.
The tire pressure warning light may come on in cool
weather when the vehicle is rst started, and then
turn off as you start to drive. This may be an early
indicator that the air pressure in the tire(s) are getting
low and need to be in ated to the proper pressure.
A tire and Loading Information label, attached to your
vehicle, shows the size of your vehicle’s original
equipment tires and the correct in ation pressure for
your vehicle’s tires when they are cold. SeeLoading
Your Vehicle on page 4-29, for an example of the
tire information label and its location on your vehicle.
Also seeIn ation - Tire Pressure on page 5-60.Your vehicle’s TPMS system can warn you about a low
tire pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation
on page 5-66andTires on page 5-54.
Notice:Do not use a tire sealant if your vehicle
has Tire Pressure Monitors. The liquid sealant can
damage the tire pressure monitor sensors.
The TPMS will not function properly if one or more of
the TPMS sensors are missing or inoperable. If the
system detects a missing or inoperable sensor, an error
message SERVICE TIRE MONITOR SYSTEM will be
shown on the DIC display. If you have replaced a
tire/wheel assembly without transferring the TPMS
sensors, the error message will be displayed. Once
you re-install the TPMS sensors, the error message
should go off. See your GM dealer for service if
all TPMS sensors are installed and the error message
comes on and stays on.
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