Tire Pressure Monitor System - Chevrolet 2004 Avalanche Owner's Manual

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.

Tire Pressure Monitor System

The Tire Pressure Monitor (TPM) system uses radio
and sensor technology to check tire pressure levels. If
your vehicle has this feature, sensors are mounted
on each tire and wheel assembly, except the spare tire.
The TPM sensors transmit tire pressure readings to
a receiver located in the vehicle.
When a low tire pressure condition is detected, the TPM
system will display the CHECK TIRE PRESSURE
warning message on the Driver Information Center
(DIC); and at the same time illuminate the low tire
pressure warning symbol. For additional information and
details about the DIC operation and displays see DIC
Operation and Displays on page 3-50 and DIC Warnings
and Messages on page 3-60.
You should stop and check your tires as soon as
possible, and inflate them to the proper pressure as
indicated on the vehicle's tire information placard.
Driving on a significantly under-inflated tire causes the
tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may
affect the vehicle's handling and stopping ability. Each
tire, including the spare, should be checked monthly
when cold and set to the recommended inflation pressure
as specified in the vehicle placard and owner's manual.
The Certification/Tire label or the Tire and Loading
Information label (tire information placard) shows the
size of your vehicle's original tires and the correct
inflation pressure for your vehicle's tires when they are
cold. See Inflation - Tire Pressure on page 5-72. For
the location of the tire and loading information label, see
Loading Your Vehicle on page 4-54.
When the tire pressure
monitoring system warning
light is lit, one or more
of your tires is significantly
under-inflated.
5-73