2005 GMC Sierra 1500 Pickup Owner's Manual - Page 229

TURN SIGNAL ON If a turn signal is left on for 3/4 of a mile (1.2 km), this message will appear on the display and you will hear a chime. Move the turn signal/multifunction lever to the off position. Pressing any of the four DIC buttons, if equipped, will acknowledge the message and clear it from the DIC display. If your vehicle is not equipped with the four DIC buttons, pressing the trip odometer reset stem will acknowledge the message and clear it from the DIC display. After pressing the customization button, VEHICLE SETTINGS will momentarily display before going to a customization option. Lock Doors (Automatic Transmission only) If you have an automatic transmission vehicle, press the customization button until LOCK DOORS appears in the display. To select your preference for automatic locking, press the select button while LOCK DOORS is displayed on the DIC. Pressing the select button will scroll through the following choices: LOCK DOORS: IN GEAR (default): The doors will lock when the vehicle is shifted out of PARK (P). LOCK DOORS: WITH SPEED: The doors will lock when the vehicle speed is above 8 mph (13 km/h) for three seconds. Choose one of the available options and press the customization button while it is displayed on the DIC to select it and move on to the next feature. For more information on automatic door locks, see Programmable Automatic Door Locks on page 2-10. DIC Vehicle Customization Your vehicle may have customization capabilities that allow you to program some features to one setting based on your preference. All of the customizable options listed may not be available on your vehicle. Only the options available will be displayed on your Driver Information Center (DIC). The default settings for the customization features were set when your vehicle left the factory, but may have been changed from their default state since then. To change feature preferences, make sure the ignition is on and the vehicle is in PARK (P). Press the customization button to scroll through the available customizable options. 3-63