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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 specific
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 inflated to the correct inflation pressure. Using
the DIC, tire pressure levels can be viewed by the
driver. For additional information and details about the
DIC operation and displays see DIC Operation and
Displays on page 3-40 and DIC Warnings and Messages
on page 3-46.
The tire pressure warning light may come on in cool
weather when the vehicle is first 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 inflated 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 inflation pressure for
your vehicle’s tires when they are cold. See Loading
Your Vehicle on page 4-29, for an example of the
tire information label and its location on your vehicle.
Also see Inflation - 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. See Tire Inspection and Rotation
on page 5-66 and Tires 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.
5-63