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If a low tire pressure condition is detected, the TPM
system will display the CHECK TIRE PRESSURE
warning message on the DIC and, at the same time,
illuminate the low tire pressure warning symbol, on the
instrument panel cluster.
Each tire, including the spare (if provided), should be
checked monthly when cold and inflated to the inflation
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire inflation pressure label.
When the low tire
pressure telltale is
illuminated, one or
more of your tires
is significantly
under-inflated.
You should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
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 4-32 for an example of the tire
and loading information label and its location on
your vehicle. Also see Inflation - Tire Pressure on
page 5-65.
Your vehicle’s TPMS can alert you about a low tire
pressure condition but it does not replace normal tire
maintenance. See Tire Inspection and Rotation on
page 5-70 and Tires on page 5-57.
Notice: Do not use a tire sealant if your vehicle has
Tire Pressure Monitors. The liquid sealant can
damage the tire pressure monitor sensors.
TPM Sensor Identification Codes
Each TPMS sensor has a unique identification code.
Any time you replace one or more of the TPMS sensors
or rotate your vehicle’s tires, the identification codes
will need to be matched to the new tire/wheel position.
The sensors are matched, to the tire/wheel positions,
in the following order: driver’s side front tire, passenger’s
side front tire, passenger’s side rear tire, and driver’s
side rear tire using a TPMS diagnostic tool. See
your GM dealer for service.
The TPMS sensors may also be matched to each
tire/wheel position by increasing or decreasing the tire’s
air pressure. If using this method to match TPMS
sensors, the complete procedure outlined below must
be performed within 15 minutes of the vehicle being
stationary.
5-68