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Engine Coolant Temperature
Warning Light (CTS)
This light will come on
when you first start the
vehicle as a check
to let you know that the
light is working.
It will go out after a few seconds. If the light does
not come on, see your GM dealer.
If the light does not go out or if the light comes on
and stays on while you are driving, your vehicle
may have a problem with the cooling system. You
should stop the vehicle and turn off the engine
as soon as possible to avoid damage to the
engine. A warning chime will also sound when this
light is on.
See Engine Overheating on page 360 and
Message Center (CTS-V) on page 209 for more
information.
Engine Coolant Temperature Gage
This gage shows the
engine coolant
temperature. If the gage
pointer moves into
the shaded area, the
engine is too hot.
That reading means the same thing as the
warning light – the engine coolant is very hot. See
Engine Overheating on page 360.
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