To find the relevant fuse(s), you must consult your owner's manual. The manual will have a detailed fuse box diagram showing the location of the fuse boxes (there's usually one under the hood and one inside the vehicle, often under the dashboard) and which fuse controls what. Looking for fuses labelled things like "instrument cluster," "backlighting," or specific components of the instrument panel is your best bet.
Without your owner's manual, it's impossible to give a precise location. Searching online for "2006 Buick Rendezvous fuse box diagram" might yield a diagram, but always use caution and cross-reference with your owner's manual for accuracy. Incorrect fuse replacement can cause further damage.
