Check Tire Pressure System - Pontiac 2002 Bonneville Owner's Manual

When to Check
Check your tires once a month or more.
Don't forget your compact spare tire. It should be
at 60 psi (420 kPa).
How to Check
Use a good quality pocket
pressure. You can't tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they're underinflated.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out
dirt and moisture.

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.
6-48
-
type gage to check tire
The CHECK TIRE PRESSURE message will appear on
the Driver Information Center (DIC) or the system
monitor TIRE PRESS light will come on if pressure
difference (low pressure) is detected in one tire. The
check tire pressure system may not alert you if:
D
more than one tire is low,
D
the vehicle is moving faster than 65 mph (105 km/h),
D
the system is not yet calibrated,
D
the tire treadwear is uneven,
D
the compact spare tire is installed,
D
tire chains are being used, or
D
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.