Check Tire Pressure System - Buick 2004 Park Avenue 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-type gage to check tire
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. Check the tire's
inflation pressure when the tires are cold. Cold means
your vehicle has been sitting for at least three hours or
driven no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage firmly onto the valve to get a
pressure measurement. If the cold tire inflation pressure
matches the recommended pressure on the Tire and
Loading Information label, no further adjustment is
necessary. If the inflation pressure is low, add air until
you reach the recommended amount.
If you overfill the tire, release air by pushing on the
metal stem in the center of the tire valve. Recheck the
tire pressure with the tire gage.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and
moisture.
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Check Tire Pressure System

If your vehicle has this feature, the check tire pressure
system can alert you to a large change in the
pressure of one tire. The system will not alert you
before you drive that a tire is low or flat. You must begin
driving before the system will work properly.
The TIRE PRESSURE LOW 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.
•
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 on page 3-39.