GM 2002 Automobile User Manual


 
6-50
Check Tire Pressure System
The check tire pressure system can alert you to a large
change in the pressure of one tire. The system won’t
alert you before you drive that a tire is low or flat.
You must begin driving before the system will
work properly.
The LOW TIRE PRESSURE message will appear on
the Driver Information Center (DIC) if pressure
difference (low pressure) is detected in one tire. The
check tire pressure system may not alert you if:
more than one tire is low,
the vehicle is moving faster than 65 mph (105 km/h),
the system is not yet calibrated,
the tire treadwear is uneven,
the compact spare tire is installed,
tire chains are being used, or
the vehicle is being driven on a rough or frozen road.
If the anti
-lock brake system warning light comes on,
the check tire pressure system may not be working
properly. See your dealer for service. Also, see
“Anti
-Lock Brake System Warning Light” in the Index.
The check tire pressure system detects differences in
tire rotation speeds that are caused by changes in tire
pressure. The system can alert you about a low
tire -- but it doesn’t replace normal tire maintenance.
See “Tires” in the Index.
When the LOW TIRE PRESSURE message appears on
the Driver Information Center, you should stop as soon
as you can and check all your tires for damage. If a tire
is flat, see “If a Tire Goes Flat” in the Index. Also check
the tire pressure in all four tires as soon as you can. See
“Inflation
-Tire Pressure” in the Index.
Any time you adjust a tire’s pressure or have one or
more tires repaired or replaced, you’ll need to reset
(calibrate) the check tire pressure system. You’ll also
need to reset the system whenever you rotate the tires,
buy new tires and install or remove the compact spare.