Chevrolet VENTURE 2001 Manual page 217

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.
2-104
This system is called OBD II
(On
and is intended to 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 Diagnostics Second Generation)