I have a 1994 firebird and when i hit the left turn signals they light but dont blink. The right side works fine and so does the hazards. I replaced the bulbs in the back of the car and the left socket lights up 4x as bright as the right side does. I havent replaced the front lightbulb yet since it looks like it would be a pain to get to. Anybody have any ideas why this is happening?

 

I had that sort of problem with my 86 Cam. Everything worked except left turning signal. Turning arrow would stay on. Turned out to be a bad ground.