Cadillac 2004 Seville - Manual (Page 329)

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
tire inflation pressure when the tire is 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.
Your vehicle has a Tire Pressure Monitor (TPM) that
sends tire pressure information to the Driver Information
Center (DIC). Using the DIC control buttons, the
driver is able to check tire pressure levels in all four
road tires. See Tire Pressure Monitor Operation
on page 5-69 and DIC Controls and Displays on
page 3-52 for additional information.
Tire Pressure Monitor Operation
Your vehicle may have a Tire Pressure Monitor
System (TPM). The TPM system uses radio and sensor
technology to check tire pressure levels. Sensors,
mounted on each road wheel, transmit tire pressure
readings to a receiver located in the trunk. Tire pressure
status and tire pressure warnings are shown on the
Driver Information Center (DIC) display. See Driver
Information Center (DIC) on page 3-52, for details
regarding DIC controls and displays.
The system operates on a radio frequency subject to
Federal Communications Commission (FCC) Rules and
with Industry and Science Canada.
5-69