Workshop Repair and Service Manuals GMC SIERRA
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Interior Lighting

Instrument Panel Illumination Control      (Instrument Panel Brightness): This feature controls the brightness of the instrument panel lights and is located next to the exterior lamps control. Push the knob to extend out and then it can be turned. Turn the...
Dome Lamps      The dome lamps are located in the overhead console. They come on when any door is opened and turn off after all the doors are closed. Turn the instrument panel brightness knob located below the dome lamp override button,...
Cargo Lamp      The cargo lamps come on by turning the instrument panel brightness control knob to the farthest clockwise position. This knob is located on the instrument panel and also turns on the dome lamps. The cargo lamps can be used...
Reading Lamps      For vehicles with reading lamps, they are located on the overhead console. To turn on the reading lamps, press the button located next to each lamp. To turn them off, press the button again. The vehicle may also have...