If The Light Is Flashing - Buick 2004 Rainier Owner's Manual

This light should come on, as a check to show you it is
working, when the ignition is on and the engine is
not running. If the light does not come on, have it
repaired. This light will also come on during a
malfunction in one of two ways:
•
Light Flashing — A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Diagnosis and service may be required.
•
Light On Steady — An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
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If the Light is Flashing

The following may prevent more serious damage to
your vehicle:
•
Reducing vehicle speed.
•
Avoiding hard accelerations.
•
Avoiding steep uphill grades.
•
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops flashing and remains on steady,
see "If the Light Is On Steady" following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart the
engine. If the light remains on steady, see "If the Light Is
On Steady" following. If the light is still flashing, follow the
previous steps, and see your dealer for service as soon
as possible.