2006 Chevrolet Uplander Owner's Manual - Page 127

Ignition Positions The key can be turned to one of four positions while in the ignition switch. B (ACCESSORY): This is the position in which you can operate the electrical accessories, such as the radio. C (RUN): This is the position to which the switch returns after the engine is started and the ignition key is released. This is the position for driving. Even while the engine is not running, RUN can be used to operate your electrical accessories and to display some instrument panel warning lights. D (START): This position starts the engine. When the engine starts, release the ignition key. The switch will return to RUN for driving. Retained Accessory Power (RAP) With RAP, your power windows and the audio system will continue to work for up to 10 minutes after the engine is turned off or until either door is opened. If a door is opened, the power windows and audio system will shut off. A (LOCK): This is the only position from which you can remove the key. This position locks your ignition and transaxle. 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 none of this works, then your vehicle needs service. 2-31