Chevrolet 2007 Colorado Owner's Manual page 388

Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure, even
if under-inflation has not reached the level to trigger
illumination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system
is not operating properly. The TPMS malfunction
indicator is combined with the low tire pressure
telltale. When the system detects a malfunction,
the telltale will flash for approximately one minute
and then remain continuously illuminated. This
sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the
system may not be able to detect or signal low
tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from
functioning properly. Always check the TPMS
malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.
388
A Tire and Loading Information label, attached to
your vehicle, shows the size of your vehicle's
original equipment tires and the correct inflation
pressure for your vehicle's tires when they are cold.
See Loading Your Vehicle on page 290, for an
example of the Tire and Loading Information
label and its location on your vehicle. Also see
Inflation - Tire Pressure on page 385 for additional
information.
Your vehicle's TPMS can warn you about a low
tire pressure condition but it does not replace
normal tire maintenance. See Tire Inspection
and Rotation on page 391, When It Is Time for
New Tires on page 393, and Tires on page 377.
Notice: Do not use a tire sealant if your vehicle
has Tire Pressure Monitors. The liquid sealant
can damage the tire pressure monitor sensors.