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Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a
low tire pressure condition exists.
TPMS sensors are mounted onto each
tire and wheel assembly, excluding the spare tire and wheel assembly. The
TPMS sensors monitor the air
pressure in the tires and transmit the tire pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition is detected, the TPMS illuminates the
low tire pressure warning light on the instrument cluster. If the warning
light comes on, stop as soon as
possible and inflate the tires to the
recommended pressure shown on the Tire and Loading Information label.
See Vehicle Load Limits 0 211.
A message to check the pressure in a specific tire displays in the Driver
Information Center (DIC). The low tire pressure warning light and the DIC
warning message come on at each ignition cycle until the tires are
inflated to the correct inflation
pressure. Using the DIC, tire pressure levels can be viewed. For additional
information and details about the DIC operation and displays see Driver
Information Center (DIC) 0 160.
The low tire pressure warning light may come on in cool weather when the vehicle is first started, and then
turn off as the vehicle is driven. This
could be an early indicator that the air pressure is getting low and needs to
be inflated to the proper pressure.
A Tire and Loading Information label, attached to your vehicle, shows the
size of the original equipment tires
and the correct inflation pressure for the tires when they are cold. See
Vehicle Load Limits 0 211, for an
example of the Tire and Loading
Information label and its location. Also see Tire Pressure 0 356.
The TPMS can warn about a low tire pressure condition but it does not
replace normal tire maintenance. See
Tire Inspection 0 361, Tire Rotation
Caution
Tire sealant materials are not all the same. A non-approved tire
sealant could damage the TPMS sensors. TPMS sensor damage
caused by using an incorrect tire sealant is not covered by the
vehicle warranty. Always use only the GM approved tire sealant
available through your dealer or included in the vehicle.
Factory-installed Tire Inflator Kits use a GM approved liquid tire sealant.
Using non-approved tire sealants
could damage the TPMS sensors. See Tire Sealant and Compressor Kit 0 370 for information regarding the inflator kit materials and instructions.
360 VEHICLE CARE
TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the
system detects a malfunction, the low tire pressure warning light flashes for about one minute and then stays on
for the remainder of the ignition cycle. A DIC warning message also displays.
The malfunction light and DIC
warning message come on at each ignition cycle until the problem is
corrected. Some of the conditions that can cause these to come on are:
. One of the road tires has been
replaced with the spare tire. The spare tire does not have a TPMS
sensor. The malfunction light and DIC message should go off after
the road tire is replaced and the sensor matching process is
performed successfully. See “TPMS Sensor Matching Process” later in
this section.
. The TPMS sensor matching process was not done or not completed successfully after
rotating the tires. The malfunction
light and the DIC message should go off after successfully
completing the sensor matching process. See "TPMS Sensor
Matching Process" later in this section.
. One or more TPMS sensors are missing or damaged. The
malfunction light and the DIC
message should go off when the TPMS sensors are installed and
the sensor matching process is
performed successfully. See your dealer for service.
. Replacement tires or wheels do
not match the original equipment tires or wheels. Tires and wheels
other than those recommended could prevent the TPMS from
functioning properly. See Buying New Tires 0 364.
. Operating electronic devices or being near facilities using radio wave frequencies similar to the TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly it cannot detect or signal a
low tire pressure condition. See your
dealer for service if the TPMS
malfunction light and DIC message comes on and stays on.
TPMS Sensor Matching Process
Each TPMS sensor has a unique
identification code. The identification code needs to be matched to a new
tire/wheel position after rotating the
vehicle’s tires or replacing one or more
of the TPMS sensors. The TPMS
sensor matching process should also be performed after replacing a spare tire with a road tire containing the
TPMS sensor. The malfunction light
and the DIC message should go off at the next ignition cycle. The sensors
are matched to the tire/wheel
positions, using a TPMS relearn tool, in the following order: driver side
front tire, passenger side front tire, passenger side rear tire, and driver
side rear. See your dealer for service or to purchase a relearn tool. A TPMS
relearn tool can also be purchased. See Tire Pressure Monitor Sensor
Activation Tool at
www.gmtoolsandequipment.com or call 1-800-GM TOOLS
(1-800-468-6657).