GMC 2004 Canyon - Manual (Page 139)

Cargo Lamps
If your vehicle is equipped with cargo lamps, you can
use them if you need more light in the cargo area of your
vehicle. The dome lamps must be on before you can
turn on the cargo lamps.
Press this button to
turn the cargo lamps
on and off.
Interior Lamps
Instrument Panel Brightness
The thumbwheel for this feature is located next to
the exterior lamps control. See Exterior Lamps on
page 3-12.
D (Instrument Panel Lights): Turn the thumbwheel
up or down to brighten or dim the instrument panel
lights and the radio display. This will only work if
the headlamps or parking lamps are on.
To turn on the dome lamp, with the vehicle doors
closed, turn the thumbwheel all the way up.
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