Malfunction Indicator Lamp - GMC 2001 C3 Owner's Manual

Malfunction Indicator Lamp

(Service Engine Soon Light in the United
States or Check Engine Light in Canada)
United States
Your vehicle is equipped with a computer which
monitors operation of the fuel, ignition and emission
control systems.
2-70
This system is called OBD II (On
Diagnostics
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON or
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.
Canada
NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
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Board
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Second Generation) and is intended to