Ignition Positions - Chevrolet Silverado 2007 Owner's Manual

Ignition Positions

A (LOCK): This position locks the ignition and
transmission. It is a theft-deterrent feature. The key
can only be removed when the ignition is turned
to LOCK.
Notice: Using a tool to force the key from the
ignition switch could cause damage or break
the key. Use the correct key and turn the key
only with your hand. Make sure the key is all the
way in. If it is, turn the steering wheel left and
right while you turn the key hard. If none of this
works, then your vehicle needs service.
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Use the key to turn
the ignition switch to
four different positions.
B (ACCESSORY): This position lets things like
the radio and the windshield wipers operate while
the engine is off.
Lengthy operation of features such as the radio
in the ACCESSORY ignition position and the RUN
position may drain the battery and prevent your
vehicle from starting. Do not operate your vehicle
in the ACCESSORY ignition position for a long
period of time.
C (RUN): This is the position for driving. It is the
position the ignition switch returns to after the
engine starts, and the key is released.
The battery could be drained if you leave the key
in the ACCESSORY 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.
D (START): This position starts the engine.