I have a 91 firebird 3.1l. The entire time I've owned this car it's had this problem. The only warning light that comes on is the brake light, I also get both turn signals but no high beam light. All of the back lights work. It looks like my dimmer is going out but I've had this problem before that. All of my fuses look good. I also tested each bulb and replaced one. It's still broken. Any ideas?