Check Tire Pressure System; How To Check - Buick 2004 Rendezvous 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.

Check Tire Pressure System

Your vehicle may have a check tire pressure system
that 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 HOLD SET TO RESET
message will appear on the Driver Information Center
(DIC) and the LOW TIRE PRESSURE message
will come on the message center if pressure difference,
or low pressure, is detected in one tire. In the following
conditions, the LOW TIRE PRESSURE message
may not come on even if the tire pressure is low, or it
may come on when the tire pressure is actually normal:
•
More than one tire is low
•
Only one tire is replaced with a new tire during
service
•
The vehicle is moving faster than 70 mph
(113 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
5-65