2010 GMC Terrain Owner's Manual - Page 138

5-4 Lighting Interior Lighting Instrument Panel Illumination Control This control is located on the instrument panel, to the left of the steering column. Dome Lamps The dome lamp controls are located in the overhead console. To change the settings, press the following: Lighting Features Entry Lighting The dome lamp, cargo lamp and foot lamp inside the vehicle come on when any door is opened, if the dome lamp is in the door position. In addition, these lamps come on when the Remote Keyless Entry (RKE) unlock button is pressed. They stay on for 20 seconds or until a door is opened. After the door is opened and then closed, the light remains on for 20 seconds, or until the ignition is turned to ON/RUN. * (Dome Lamp Override): Turns the lamp off, even when a door is open. D (Instrument Panel Brightness): Turn clockwise or counterclockwise to brighten or dim the lights. 1 (Door): The lamp comes on automatically when a door is opened. + (On): Turns the dome lamp on. Reading Lamps The reading lamps are located on the overhead console. These lamps come on automatically when any door is opened. For manual operation, press the button next to each lamp to turn it on or off.