Hummer 2006 H3 - Manual (Page 158)

Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
If the gage pointer is in the shaded area of the gage,
the engine is too hot. It means that your engine coolant
has overheated. If you have been operating your
vehicle under normal driving conditions, you should pull
off the road, stop your vehicle and turn off the engine
as soon as possible.
See Engine Overheating on page 5-27 for more
information.
Tire Pressure Light
This light should come on
briefly when you turn the
ignition to ON. It will
then come on only when
a flat or low tire pressure
condition exists.
See Tire Pressure Monitor System on page 5-59 for
more information.
United States Canada
3-34