Pontiac 2003 Vibe - Manual (Page 136)

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Oil Pressure Light
If you have a problem with
your oil, this light may stay
on after you start your
engine or come on when
you are driving.
This indicates that there is not enough oil pressure to
keep your engine properly lubricated and cool.
The engine could be low on oil, or have some other oil
related problem. Have it fixed right away.
The oil light could also come on in three other
situations.
D When the ignition is on but the engine is not running,
the light will come on as a test to show you it is
working, but the light will go out when you turn the
ignition to START. If it doesn’t come on with the
ignition on, you may have a problem with the fuse or
bulb. Have it fixed right away.
D Sometimes when the engine is idling at a stop, the
light may blink on and off. This is normal.
D If you make a hard stop, the light may come on for a
moment. This is normal.
CAUTION:
Don’t keep driving if the oil pressure is low.
If you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.