My 2002 Impala signal lights work sometimes and sometimes they don't. I've changed the flasher. The weird thing is that usually if I hit the hazards for a few seconds that then the signal will work. Also, if I turn the turn signal on when's it's not working, the brakes lights stop working. My husband says one shouldn't have anything to do with the other but that's what's happening. He hates to take stuff to the Chevy garage and blow a load of money if it's something maybe we can fix. Anyone have any ideas?

 

read the manual and check the lamp fuses you might have one out, or a bad ground

 

When you say you've changed the flasher you mean you changed the hazard switch right? The only other common point between the signals\hazards\brake lights is the signal switch itself. May want to look into that

 

Hopefully that goes the same with chevrolet impala tail light. I've replced them lots of times already but haven't experienced them to be always in good condition.

 

Multi-function switch islikely the problem. but not cheap