Instrument panel lights don't light up 2000 Pontiac GrandAm

2000 Pontiac Grand Am 3.4l v6 auto 4-door 128,000 mi. I am having a serious problem with the instrument panel lights. All the exterior lights work and so does the dome light and floor light. The warning lights, odometer, and gauges work fine. It is just the lights that light up all the switches and isntrument panel that don't work. I checked the fuse and there is power to it. The dimmer switch even works with the dome light. It did have an alarm system that the dealer installed a few years ago. That I unplugged because as soon as the lights went out I started having problems with the alarm working correctly. I hope someone knows alot about this cars wiring. It is hard to drive at night I have to put the dome light on to see the speedometer and stuff. I pulled the instrument panel out to see if the bulbs were burned out but they all looked fine. I just don't know where to start. Can someone please help me out?