Replacement tires or wheels do not match your
vehicle’s original equipment tires or wheels. Tires
and wheels other than those recommended for your
vehicle could prevent the TPMS from functioning
properly. SeeBuying New Tires on page 5-63.
Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If tire chains are installed on the vehicle.
If there is a lot of snow or ice around the wheels
or wheel housings.
If a window tint that affects the radio wave signals
is installed.
If the TPMS is not functioning it cannot detect or
signal a low tire condition. See your dealer/retailer
for service if the TPMS malfunction light comes on
and stays on.
TPMS Reset
In order for the tire pressure monitoring system to work
properly you need to reset (initialize) the tire pressure
monitoring system. Any time you repair or replace a tire
or wheel, or rotate the tires the tire pressure monitor
system needs to be reset.
Do not reset (initialize) the system without rst correcting
the cause of the low-tire condition. If the system is reset
when the tire pressures are incorrect, the system will
not function properly and might not alert you when a
tire is low.
When initializing the system, the present tire in ation
pressure is stored as standard. The tire pressure warning
system determines decreased air pressure by comparing
the present and the standard tire in ation pressures.
When you change the set tire in ation pressure, it is
necessary to initialize the tire pressure warning system.
To reset (initialize) the system:
1. Park the vehicle at a safe place and apply the
parking brake. Turn the engine off.
2. Turn the ignition to ACC/ACCESSORY or
LOCK/OFF.
3. Adjust the tire pressure of all the installed tires
to the speci ed cold tire in ation pressure level.
4. Turn the ignition to ON/RUN with the engine off.
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Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned and
balanced carefully at the factory to give you the longest
tire life and best overall performance. Adjustments to
wheel alignment and tire balancing will not be necessary
on a regular basis. However, if you notice unusual tire
wear or your vehicle pulling to one side or the other,
the alignment might need to be checked. If you notice
your vehicle vibrating when driving on a smooth road,
the tires and wheels might need to be rebalanced.
See your dealer/retailer for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted
or corroded. If wheel nuts keep coming loose, the wheel,
wheel bolts, and wheel nuts should be replaced. If the
wheel leaks air, replace it (except some aluminum
wheels, which can sometimes be repaired). See your
dealer/retailer if any of these conditions exist.
Your dealer/retailer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset, and be mounted
the same way as the one it replaces.If you need to replace any of your wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor System (TPMS)
sensors, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, wheel nuts, and TPMS sensors
for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts, or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires
lose air and make you lose control. You could
have a collision in which you or others could
be injured. Always use the correct wheel,
wheel bolts, and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-70for more
information.
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