Tire Pressure Light; Malfunction Indicator Lamp - GMC 2007 Yukon Denali Owner's Manual

Tire Pressure Light

This light will also come on when one or more of
your tires are significantly underinflated.
If your vehicle has a Driver Information Center
(DIC), a CHECK TIRE PRESSURE DIC message
will accompany the light. See DIC Warnings
and Messages on page 254 for more information.
Stop and check your tires as soon as it is safe
to do so. If underinflated, inflate to the proper
pressure. See Tires on page 481 for more
information.
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This light will come on
briefly when you turn
the ignition to RUN.
This light will flash for 60 seconds and then turn
on solid if a problem is detected with the Tire
Pressure Monitor system.
See Tire Pressure Monitor System on page 490
for more information.

Malfunction Indicator Lamp

Check Engine Light
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable
levels for the life of the vehicle, helping to produce
a cleaner environment. The check engine light
comes on to indicate that there is a problem and
service is required.
Your vehicle has a
computer which
monitors operation of
the fuel, ignition,
and emission control
systems.