2005 Chevrolet Express Van Owner's Manual - Page 97

Ignition Positions 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 in all the way. If none of this 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. 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. 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. 2-19