Engine Coolant Temperature Gage; Malfunction Indicator Lamp - Chevrolet 2007 HH7 Owner's Manual

Engine Coolant Temperature Gage

If the gage pointer moves into the red area, your
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 309.
188
Your vehicle has an
engine coolant
temperature gage. With
the ignition turned to
RUN, this gage shows
the engine coolant
temperature.

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. Malfunctions often will be
indicated by the system before any problem is
apparent. This may prevent more serious damage
to your vehicle. This system is also designed to
assist your service technician in correctly
diagnosing any malfunction.
Your vehicle has a
computer which
monitors operation of
the fuel, ignition,
and emission control
systems.