Chevrolet 2007 HH7 Owner's Manual page 117

R
(RUN): This is the position the switch returns to
after you start your engine and release the
switch. The switch stays in the RUN position when
the engine is running. But even when the ignition
is not running, you can use RUN to operate
your electrical accessories and to display some
warning and indicator lights.
The battery could be drained if you leave the key
in the ACC or RUN position with the engine
off. You may not be able to start your vehicle if
the battery is allowed to drain for an extended
period of time.
/
(START): This position starts the engine.
When the engine starts, release the key.
The ignition switch will return to RUN for normal
driving.
A warning tone will sound if you open the driver's
door while in LOCK or ACC, when the key has
not been removed from the ignition.
Key In the Ignition
Never leave your vehicle with the keys inside, as it
is an easy target for joy riders or thieves. If you
leave the key in the ignition and park your
vehicle,a chime will sound, when you open the
driver's door. Always remember to remove
your key from the ignition and take it with you.
This will lock your ignition and transaxle.
Also, always remember to lock the doors.
The battery could be drained if you leave the key
in the ignition while your vehicle is parked.
You may not be able to start your vehicle after it
has been parked for an extended period of time.
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