Dimmer-controlled dash/console lights completely inoperative

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38,000miles Chevrolet Malibu 1) Dashboard lights and console lights will not illuminate under ANY condition 2) Dome light works fine on ALL Settings 3) Radio light works UNTIL foot break is released at which point it goes off (completely). Radio works even though the radio LED is not illuminated. 4) Blinkers and indicating lights WORK NORMALLY 5) Small light that illuminates the "outside air" button works 6) Fan still works on all settings 7) The dimmer has no effect, but all lights controlled by the dimmer appear completely nonfunctional. If this is a fuse, can anyone guide me to the appropriate one? When I am driving at night, the car is near completely dark.