Engine Coolant Temperature Gage; Malfunction Indicator Lamp - Pontiac Grand Prix 2007 Owner's Manual

Engine Coolant Temperature Gage

If the gage pointer moves into the shaded area,
the engine is too hot. That reading means
the engine coolant has overheated. If you have
been operating the vehicle under normal
driving conditions, you should pull off the road,
stop the vehicle, and turn off the engine as
soon as possible.
See Cooling System on page 372 for more
information.
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The vehicle has a gage
that 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.