Ignition Positions; Retained Accessory Power (Rap) - GMC 2006 Savana Owner's Manual

Ignition Positions

Use the key to turn the ignition switch to four different
positions.
A (LOCK): This position locks the ignition and
transmission. It is a theft-deterrent feature. You will only
be able to remove the key when the ignition is turned
to LOCK.
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Notice: If your key seems stuck in LOCK and you
cannot turn it, be sure you are using the correct key;
if so, is it all the way in? Turn the key only with
your hand. Using a tool to force it could break the
key or the ignition switch. If none of these works,
then your vehicle needs service.
B (ACCESSORY): This position lets you use things like
the radio and the windshield wipers when the engine
is off.
Notice: Lengthy operation of features such as the
radio in the accessory ignition 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.
D (START): This position starts the engine.

Retained Accessory Power (RAP)

The Retained Accessory Power (RAP) feature will allow
certain features on your vehicle to continue to work
for up to 10 minutes after the ignition key is turned to
LOCK or until one of the doors is opened.